Remove ICollideSpecial

Handled in an ECS way by PreventCollideEvent.
The disposals one doesn't work anyway and would've required a larger refactor of disposals to fix so out of scope.

Content.Client/GameObjects/Components/Projectiles/ProjectileComponent.cs

@@ -4,16 +4,14 @@ using Robust.Shared.GameObjects;
 namespace Content.Client.GameObjects.Components.Projectiles
 {
     [RegisterComponent]
+    [ComponentReference(typeof(SharedProjectileComponent))]
     public class ProjectileComponent : SharedProjectileComponent
     {
-        protected override EntityUid Shooter => _shooter;
-        private EntityUid _shooter;
-
         public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
         {
             if (curState is ProjectileComponentState compState)
             {
-                _shooter = compState.Shooter;
+                Shooter = compState.Shooter;
                 IgnoreShooter = compState.IgnoreShooter;
             }
         }

Content.Client/GameObjects/EntitySystems/BuckleSystem.cs

@@ -0,0 +1,9 @@
+using Content.Shared.GameObjects.EntitySystems;
+
+namespace Content.Client.GameObjects.EntitySystems
+{
+    internal sealed class BuckleSystem : SharedBuckleSystem
+    {
+
+    }
+}

Content.Client/GameObjects/EntitySystems/DoorSystem.cs

@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using Content.Client.GameObjects.Components.Doors;
 using Content.Shared.GameObjects.Components.Doors;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects;
 
 namespace Content.Client.GameObjects.EntitySystems
@@ -9,7 +10,7 @@ namespace Content.Client.GameObjects.EntitySystems
     /// <summary>
     /// Used by the client to "predict" when doors will change how collideable they are as part of their opening / closing.
     /// </summary>
-    public class ClientDoorSystem : EntitySystem
+    internal sealed class DoorSystem : SharedDoorSystem
     {
         /// <summary>
         /// List of doors that need to be periodically checked.