Power Rework (#863)

Co-authored-by: py01 <pyronetics01@gmail.com>

Content.Shared/GameObjects/Components/Power/SharedPowerCell.cs

@@ -0,0 +1,11 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Power
+{
+    [Serializable, NetSerializable]
+    public enum PowerCellVisuals
+    {
+        ChargeLevel
+    }
+}