logic gate stuff (#16943)

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Shared/DeviceLinking/SharedLogicGate.cs

@@ -0,0 +1,36 @@
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.DeviceLinking;
+
+
+/// <summary>
+/// Types of logic gates that can be used, determines how the output port is set.
+/// </summary>
+[Serializable, NetSerializable]
+public enum LogicGate : byte
+{
+    Or,
+    And,
+    Xor,
+    Nor,
+    Nand,
+    Xnor
+}
+
+/// <summary>
+/// Tells clients which logic gate layer to draw.
+/// </summary>
+[Serializable, NetSerializable]
+public enum LogicGateVisuals : byte
+{
+    Gate
+}
+
+/// <summary>
+/// Sprite layer for the logic gate.
+/// </summary>
+[Serializable, NetSerializable]
+public enum LogicGateLayers : byte
+{
+    Gate
+}