Doors! (#12)

* Doors WiP

* Kinda seem to work now?

* Finished

* Oh yeah maybe enable that.

* It works except it doesn't

* Undo formatting changes

* BuildChecker too

Content.Shared/GameObjects/Components/Doors/SharedDoorComponent.cs

@@ -0,0 +1,23 @@
+using System;
+using SS14.Shared.GameObjects;
+
+namespace Content.Shared.GameObjects
+{
+    public abstract class SharedDoorComponent : Component
+    {
+        public override string Name => "Door";
+        public override uint? NetID => ContentNetIDs.DOOR;
+        public override Type StateType => typeof(DoorComponentState);
+    }
+
+    [Serializable]
+    public class DoorComponentState : ComponentState
+    {
+        public readonly bool Opened;
+
+        public DoorComponentState(bool opened) : base(ContentNetIDs.DOOR)
+        {
+            Opened = opened;
+        }
+    }
+}