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.IntegrationTests/Tests/Networking/SimplePredictReconcileTest.cs

@@ -3,13 +3,13 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
-using Content.Shared.NetIDs;
 using NUnit.Framework;
 using Robust.Client.GameObjects;
 using Robust.Client.GameStates;
 using Robust.Server.Player;
 using Robust.Shared;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameStates;
 using Robust.Shared.IoC;
 using Robust.Shared.Map;
 using Robust.Shared.Players;
@@ -391,10 +391,10 @@ namespace Content.IntegrationTests.Tests.Networking
             }
         }
 
+        [NetworkedComponent()]
         private sealed class PredictionTestComponent : Component
         {
             public override string Name => "PredictionTest";
-            public override uint? NetID => ContentNetIDs.PREDICTION_TEST;
 
             private bool _foo;
 
@@ -428,7 +428,7 @@ namespace Content.IntegrationTests.Tests.Networking
             {
                 public bool Foo { get; }
 
-                public PredictionComponentState(bool foo) : base(ContentNetIDs.PREDICTION_TEST)
+                public PredictionComponentState(bool foo)
                 {
                     Foo = foo;
                 }