Predict and cleanup RingerComponent (#35907)

* clean up most stuff

* move to shared

* works

* shuffle shit around

* oops! access

* fixes

* todo: everything

* SUFFERING

* curse you

Content.Shared/PDA/SharedPdaSystem.cs

@@ -66,5 +66,11 @@ namespace Content.Shared.PDA
         {
             Appearance.SetData(uid, PdaVisuals.IdCardInserted, pda.ContainedId != null);
         }
+
+        public virtual void UpdatePdaUi(EntityUid uid, PdaComponent? pda = null)
+        {
+            // This does nothing yet while I finish up PDA prediction
+            // Overriden by the server
+        }
     }
 }