* Add rejuvenate command
Takes one or more entity uids as input. Attempts to find a DamageableComponent on that mob and heal all damage on it.
* Add rejuvenate to right click menu
* Update engine submodule
* Make suggested changes
- Remove redundant error checks in rejuvenate console command, add in relevant ones along with shell messages so the user knows what's going on.
- Remove localization of group check on rejuvenate verb, since the translated version wouldn't be in groups.yml this would've broken the verb in other locales.
- Have the rejuvenate verb attempt to heal the user by default if no arguments were provided to it.
* More localization + help message formatting improvement
* Add more suggested changes
* Removes static `IoCManager` service locator calls from `Robust.Shared.Map` namespace.
* Misc code cleanup and filling out doc comments for Map classes.
* Added Union and Intersect methods to Box2.
* Any touched component was converted from static IoC calls to field injection.
Sibling PR to https://github.com/space-wizards/RobustToolbox/pull/796.
