machine linking refactor to ecs (#4323)

* started work

* some more work, ui working (somewhat)

* stuff

* reorganization

* some more reorg

* conveyors

* conveyors working

* finalized (dis)connection
added linkattempt
added feedback text
work on conveyors

* removed command
add rangecheck

* fixed inrange check

* handling

* ui no longer kanser, ship it

* adresses reviews

* reformats file

* reformats file

Co-authored-by: Paul <ritter.paul1+git@googlemail.com>

Content.Shared/MachineLinking/TwoWayLeverSignal.cs

@@ -13,7 +13,7 @@ namespace Content.Shared.MachineLinking
     public enum TwoWayLeverSignal : byte
     {
         Middle,
-        Left,
-        Right
+        Right,
+        Left
     }
 }

Content.Shared/MachineLinking/UIKeys.cs

@@ -0,0 +1,17 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.MachineLinking
+{
+    [Serializable, NetSerializable]
+    public enum SignalTransmitterUiKey
+    {
+        Key
+    }
+
+    [Serializable, NetSerializable]
+    public enum SignalReceiverUiKey
+    {
+        Key
+    }
+}

Content.Shared/MachineLinking/UIMessages.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.MachineLinking
+{
+    [Serializable, NetSerializable]
+    public class SignalPortsState : BoundUserInterfaceState
+    {
+        /// <summary>
+        /// A Dictionary containing all ports and wether or not they can be selected.
+        /// </summary>
+        public readonly Dictionary<string, bool> Ports;
+
+        public SignalPortsState(string[] ports) : this(ports.ToDictionary(s => s, _ => true))
+        {
+        }
+
+        public SignalPortsState(Dictionary<string, bool> ports)
+        {
+            Ports = ports;
+        }
+    }
+
+    [Serializable, NetSerializable]
+    public class SignalPortSelected : BoundUserInterfaceMessage
+    {
+        public readonly string Port;
+
+        public SignalPortSelected(string port)
+        {
+            Port = port;
+        }
+    }
+}