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/DoAfter/SharedDoAfterComponent.cs

@@ -1,18 +1,17 @@
-#nullable enable
+#nullable enable
 using System;
 using System.Collections.Generic;
-using Content.Shared.NetIDs;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameStates;
 using Robust.Shared.Map;
 using Robust.Shared.Serialization;
 
 namespace Content.Shared.DoAfter
 {
+    [NetworkedComponent()]
     public abstract class SharedDoAfterComponent : Component
     {
         public override string Name => "DoAfter";
-
-        public override uint? NetID => ContentNetIDs.DO_AFTER;
     }
 
     [Serializable, NetSerializable]
@@ -20,7 +19,7 @@ namespace Content.Shared.DoAfter
     {
         public List<ClientDoAfter> DoAfters { get; }
 
-        public DoAfterComponentState(List<ClientDoAfter> doAfters) : base(ContentNetIDs.DO_AFTER)
+        public DoAfterComponentState(List<ClientDoAfter> doAfters)
         {
             DoAfters = doAfters;
         }