add: Jetpack for mices. (ss220-space#5176)

* add: mouse idle animation

* fix: daebdir review

* 1/2

* Done.

* Conflicts.

* Cleaning.

* Oh shit here we go again.

* A-a--a-a-a-a-aa-a--a-a-a-and done.

* Update mobs.dm

* Eh...

* Better that.

* Zwei corrections.

* Unnecessary message.

* Lesenka R.I.P 2024 - 2024

* Conflict resolving.

* Conflict resolve.

* `update_icons()` using. Random rodent spawners.

* And done.

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Co-authored-by: ROdenFL <144662735+ROdenFL@users.noreply.github.com>