Remove Static Component NetIds (#4247)

* Remove the unnecessary NetID property from ComponentState.

* Remove Component.NetworkSynchronizeExistence.

* Removed Component.NetID.

* Adds component netID automatic generation.

* Removed NetIdAttribute from serverside components with no corresponding clientside registration.

* Completely remove static NetIds.

* Renamed NetIDAttribute to NetworkedComponentAttribute.

* Add GenerateNetIds calls to client and server entry points.
Add test to make sure auto generated NetIds are identical.

* Component changes when rebasing that I am too lazy to rewrite into the branch.

Co-authored-by: Vera Aguilera Puerto <6766154+Zumorica@users.noreply.github.com>

Content.Shared/Light/Component/SharedHandheldLightComponent.cs

@@ -1,15 +1,15 @@
 #nullable enable
 using System;
-using Content.Shared.NetIDs;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameStates;
 using Robust.Shared.Serialization;
 
 namespace Content.Shared.Light.Component
 {
+    [NetworkedComponent()]
     public abstract class SharedHandheldLightComponent : Robust.Shared.GameObjects.Component
     {
         public sealed override string Name => "HandheldLight";
-        public sealed override uint? NetID => ContentNetIDs.HANDHELD_LIGHT;
 
         protected abstract bool HasCell { get; }
 
@@ -20,7 +20,7 @@ namespace Content.Shared.Light.Component
         {
             public byte? Charge { get; }
 
-            public HandheldLightComponentState(byte? charge) : base(ContentNetIDs.HANDHELD_LIGHT)
+            public HandheldLightComponentState(byte? charge)
             {
                 Charge = charge;
             }