Mail Cart (#41482)

Mail Cart (#41482)

* Add mailcart crate type

* Add recent progress, move location of mailcart.rsi

* Allow letters and packages to be inserted

* Add updated sprites for mailcart

* Add storage for letters

* Bugfix for sprite

* Add fix for mincount mailcart sprite updates

* Add dynamic names to packages in mailcart

* Add additional whitelist items

* Update tag comments

* Remove max item size

* Update fixture for mailcart, remove unused code from crates.yml

* Add mail cart to cargo ordering

* Update meta.json

* Remove unused comment

* Update copyright

* Add missing ContainerContainer

* Update ContainerContainer

* Revert "Update ContainerContainer"

This reverts commit 1805dcd58d8c0f52baca9db0d3173940ee241159.

* Remove container slots and increase storage

* Remove unused tags

* Remove LetterDelivery tag

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Co-authored-by: Justin Pfeifler <jrpl101998@gmail.com>