`StyleNano` removal: Palette system and Sheetlets (#29903)

`StyleNano` removal: Palette system and Sheetlets (#29903)

* Apply patch https://github.com/moonheart08/space-station-14/compare/1777eea9a42a8bdbc4a865327bb9ef3e10fe57de..6b32bb2b148ef9d312b5332ccea4d8688694dba5

Signed-off-by: Brandon Li <sirbrandonthenerd@gmail.com>
* make red squiggly line go away

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* Add todo list

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* Add palette to `TextureButton`

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* Rename `PalettedButtonSheetlet` to `NTButtonSheetlet` and move useful methods to `ButtonSheetlet`

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* migrate `ContextMenu` styles

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* Update todo

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* tweak NT colors

* New stylesheet: `InterfaceStylesheet` & `InterfaceTooltipSheetlet`

* Move inheritance of `IButtonConfig` to `NanotransenStylesheet.Buttons`

* move `MenuButtonSheetlet` & actually implement `InterfaceStylesheet` correctly

Signed-off-by: Brandon Li <sirbrandonthenerd@gmail.com>
* tweak color & update todo

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* chat is this real (update chat palette)

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* Update todo

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* `SmallButton` and remove some obsolete things from `StyleNano`

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* rename `StyleClasses` to `StyleClass` so `Stylesheets.Redux.StyleClasses` syntax is dead

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* replace `ButtonColorGreen` with `Positive`

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* `Placeholder`

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* Examine popup buttons

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* move over more things & cleanup `StyleNano` more (under 1000 lines!!!!)

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* Remove some more redundant stuff

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* Undo style change for chat window

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* paper editing works now

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* `OptionButton` styles

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* `ListContainer`, move `DefaultWindow` styles (for now) & more cleanup

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* fix `ActionButton` not having highlighting

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* remove imports of `Robust.Client.UserInterface.StylesheetHelpers` & format

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* `ButtonBig` and more cleanup

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* Move items inheriting from `ISheetletConfig` into their own directory

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* Cleanup & move `Label` styles

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* Action search box styles

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* Moved, stuff is

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* rename `LabelSubtext` to `LabelSubText` & move more stuff (were almost there!!)

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* yap & move over MORE stuff (just like one thing left!!!)

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* Change status classes to appropriate existing classes

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* remove remaining references to `StyleNano`

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* Fix some hardcoding & broken code, `GetFromControl`

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* Scrollbars!

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* chores

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* clean up `StyleClass.cs`

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* `ItemListSheetlet` refactor

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* more chores!

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* Consistency w/ directory structure

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* Move `MainMenuSheetlet`

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* `ColorPalette`

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* whoopsie

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* Remove most sheet-specific sheetlets

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* fix warnings, cleanup, & fix scrollbar (this is why we fix warnings boys)

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* yap

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* MASSIVE resharper skill issue

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* actually use `ISheetletConfig`

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* have specific sheetlet be specific

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* `GetResourceOr`

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* cleanup & move / remove `IPalette`s

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* actually do specific stylesheets correctly & fix tooltips

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* cleanup & logging

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* Move `FontKind` and `FontKindExtensions` to their own files

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* rename `InterfaceStylesheet` to `SystemStylesheet`

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* change `ButtonHovered` etc to `PseudoHovered` etc

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* give the palettes fun names

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* `StyleSpace` is no more

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* It should compile now! I am now going to bed (fr) if it fails it fails

Signed-off-by: Brandon Li <sirbrandonthenerd@gmail.com>
* make squiggly red line go away

Signed-off-by: Brandon Li <sirbrandonthenerd@gmail.com>
* add additional type restrictions to sheetlets

* `CommonStylesheet`

* minor cleanup

* Make `GetSheetletRules` not horrible

* wait this was duplicating style rules. oops!

* move some sheetlets to their associated xamls

* oh wait apparently that was important

* review pass 1

* review pass 2 (font & color stuff)

* review pass 3: remove unused stuff / filename fix

* fix warnings & "replace cast with explicit variable type"

* move `Palette` stuff to its own directory

* tweak colors (they're different now that I actually fixed the OKlab thing)

* review pass 4: little things

* make window close button grey before hovering

* refactor `HLine` to make it less terrible and allow it to be styled

* fix `NanoHeading` (it's been broken for a while whoops) and cleanup hardcoding

* band-aid missing references in `StyleNano`

* move `StyleBox` generating functions out of `IButtonSheetlet` into `StyleBoxHelper`

* remove dictionary field from `IStylesheetManager`

* Add check for unloaded sheetlets

* style tweaks to satisfy OCD

* I somehow missed this: `Caution` styleclass replaced with `negative`, refactor `PowerChargeWindow`

* tweak palettes for like the fourth time

* construct `StyleNano` / `StyleSpace` in `StylesheetManager` and mark them as obsolete

* rename `BackgroundPanel` classes for consistency

* tweak window / `ListContainer`

* oh right you use `///` not `/**`

* font system is bad, make it temporary

* acknowledge Divider funkyness

* remove use of class `Disabled`

* `ColorPalette` allow overriding colors with brace initialization

* review pass again

* tweak disabled button colors

* `StatusPalette` tweaks

* typo

* Make squiggly red line go away

* Delete `Redux`

* Remove all references to `Redux`

* make red less radioactive

* Store stylesheet name inside stylesheet class

* fix merge errors

* use RT's Oklab support instead

* shuffle around `StylesheetManager` fields

* apply stylesheets based off `StylesheetComponent`

* simplify `ColorPalette` construction

* add todo for `SheetletConfigType`

* `OptionButton` has a background color now

* fix disabled buttons

* sigh (red color palette fixed)

* make `ItemList` use primary palette

* Revert "apply stylesheets based off `StylesheetComponent`"

This reverts commit c05b147da845f6e04ff33d1cbd91a18a92c676d7.

* dead code removal

* buttons are green when pressed (we need togglebuttons)

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Signed-off-by: Brandon Li <sirbrandonthenerd@gmail.com>
Co-authored-by: Janet Blackquill <uhhadd@gmail.com>