Spacelube slide (#24801)

* Space lube now makes you slide

* review

* oh lord he slippin

---------

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Slippery/SlidingComponent.cs

@@ -0,0 +1,22 @@
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Slippery;
+
+/// <summary>
+/// Applies continuous movement to the attached entity when colliding with super slipper entities.
+/// </summary>
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+public sealed partial class SlidingComponent : Component
+{
+    /// <summary>
+    ///     A list of SuperSlippery entities the entity with this component is colliding with.
+    /// </summary>
+    [DataField, AutoNetworkedField]
+    public HashSet<EntityUid> CollidingEntities = new ();
+
+    /// <summary>
+    ///     The friction modifier that will be applied to any friction calculations.
+    /// </summary>
+    [DataField, AutoNetworkedField]
+    public float FrictionModifier;
+}