Jetpacks (#9023)

* Movement acceleration

* tweaks

* Weightless refactor coz fuck it

* CCVars

* weightless movement tweaks

* Some cleanup while I'm here

* dorkpacks

* thanks fork

* fixes

* zoomies

* toggles

* hmm

* yamls

* b

* so true

* Effects refactor

* namespace

* review

Content.Server/Storage/EntitySystems/StorageSystem.cs

@@ -28,6 +28,7 @@ using Content.Server.Popups;
 using Content.Shared.Destructible;
 using static Content.Shared.Storage.SharedStorageComponent;
 using Content.Shared.ActionBlocker;
+using Content.Shared.Movement.Events;
 
 namespace Content.Server.Storage.EntitySystems
 {