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.Shared/Movement/Components/JetpackComponent.cs

@@ -0,0 +1,24 @@
+using Content.Shared.Actions.ActionTypes;
+using Content.Shared.Atmos;
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Movement.Components;
+
+[RegisterComponent, NetworkedComponent]
+public sealed class JetpackComponent : Component
+{
+    [ViewVariables(VVAccess.ReadWrite), DataField("volumeUsage")]
+    public float VolumeUsage = Atmospherics.BreathVolume;
+
+    [ViewVariables, DataField("toggleAction", required: true)]
+    public InstantAction ToggleAction = new();
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("acceleration")]
+    public float Acceleration = 1f;
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("friction")]
+    public float Friction = 0.3f;
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("weightlessModifier")]
+    public float WeightlessModifier = 1.2f;
+}