Refactor UpdateKinematics() and fix a lot of Content warnings (#1709)

Most warnings were related to EntityQuery and IPhysicsComponent.
Partially fixes #1650 and fixes #1682

Content.Server/GameObjects/Components/Movement/AiControllerComponent.cs

@@ -42,9 +42,9 @@ namespace Content.Server.GameObjects.Components.Movement
         {
             base.Initialize();
 
-            // This component requires a physics component.
-            if (!Owner.HasComponent<IPhysicsComponent>())
-                Owner.AddComponent<PhysicsComponent>();
+            // This component requires a collidable component.
+            if (!Owner.HasComponent<ICollidableComponent>())
+                Owner.AddComponent<CollidableComponent>();
         }
 
         /// <inheritdoc />