Dissolve Move, Infiltration and Crates namespaces

More preparation to make the transition to Mods.Common a little easier.

NOTE: Please give the Attack changes some special attention, I had to make AttackTurreted public to move AttackPopupTurreted, not sure whether that might have any unwanted side-effects.
Maybe move all these into `Traits\Crates` instead of `Traits\CrateActions` and move `Crate.cs` in there too?