Singularity Shaders and a lot of Shader Stuff (#2517)

* Beginnings of singulo shader

* LOTS of changes!!

* Minor changes

* Singulo stuff

* Aesthetic changes to singulo

* Combining singulo change

* ShaderAura uses IEntities now, not IPlayerSession

* Fixes?

* Fixes draw order for atmos

* using fix

* Address reviews

* nuget.config whaaa

* nuget haha

* nuget why are you so dum

* happy now

* Preparing for omegachange

* Merge from seventh level of hell

* woork

* Ignorecomponents add

* mmf

* RobustToolbox?

* Fixes

* Fixes Robust?

* adds sprite

* Nullables

* Crit overlay stuff

* Commits Robust

Content.Shared/GameObjects/Components/Singularity/SharedSingularityComponent.cs

@@ -0,0 +1,25 @@
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+using System;
+
+namespace Content.Shared.GameObjects.Components.Singularity
+{
+    
+    public abstract class SharedSingularityComponent : Component
+    {
+        public override string Name => "Singularity";
+        public override uint? NetID => ContentNetIDs.SINGULARITY;
+
+
+        [Serializable, NetSerializable]
+        protected sealed class SingularityComponentState : ComponentState
+        {
+            public int Level { get; }
+
+            public SingularityComponentState(int level) : base(ContentNetIDs.SINGULARITY)
+            {
+                Level = level;
+            }
+        }
+    }
+}