Add basic PDA/Syndicate Uplink. (#942)

Co-authored-by: FL-OZ <anotherscuffed@gmail.com>
Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

Content.Shared/GameObjects/Components/PDA/UplinkCategory.cs

@@ -0,0 +1,8 @@
+namespace Content.Shared.GameObjects.Components.PDA
+{
+    public enum UplinkCategory
+    {
+        Weapon,
+        Utility,
+    }
+}