Basic drug shader (#9033)

Content.Shared/Drugs/SeeingRainbowsComponent.cs

@@ -0,0 +1,9 @@
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Drugs;
+
+/// <summary>
+///     Exists for use as a status effect. Adds a shader to the client that scales with the effect duration.
+/// </summary>
+[RegisterComponent, NetworkedComponent]
+public sealed class SeeingRainbowsComponent : Component { }