Atmospherics/Temperature HeatContainers (#39997)

Atmospherics/Temperature HeatContainers (#39997)

* Initial HeatContainer logic

* comment fixes

* Comment changes + ChangeHeatCapacity

* highly intelligent specimen

* n-body full heat exchange methods

* extract to partials

* highly intelligent specimen

* fixes + ChangeHeatCapacityKeepTemperature

* Divide and merge methods

* even divide

* different merge signature

* forgot one little thing

* address review

* missing docs

* addr review

* oops

* review

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Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>