Add Chameleon PDA (#30514)

* V1 commit

* Remove PDA name and unnecessary pda state

* Adds PDA to Chameleon backpack & thief toolbox

* Change to use AppearanceDataInit

* Add basic PDA state to ensure there's always a sprite before AppearanceData can be applied

* Revert PDA name (this will be changed to another way later)

* Update PDA name updating to new system

* Fix yaml, and fix Agent ID chameleon

* Updated based on review

Content.Client/PDA/PdaVisualizerSystem.cs

@@ -0,0 +1,30 @@
+using Content.Shared.Light;
+using Content.Shared.PDA;
+using Robust.Client.GameObjects;
+
+namespace Content.Client.PDA;
+
+public sealed class PdaVisualizerSystem : VisualizerSystem<PdaVisualsComponent>
+{
+    protected override void OnAppearanceChange(EntityUid uid, PdaVisualsComponent comp, ref AppearanceChangeEvent args)
+    {
+        if (args.Sprite == null)
+            return;
+
+        if (AppearanceSystem.TryGetData<string>(uid, PdaVisuals.PdaType, out var pdaType, args.Component))
+            args.Sprite.LayerSetState(PdaVisualLayers.Base, pdaType);
+
+        if (AppearanceSystem.TryGetData<bool>(uid, UnpoweredFlashlightVisuals.LightOn, out var isFlashlightOn, args.Component))
+            args.Sprite.LayerSetVisible(PdaVisualLayers.Flashlight, isFlashlightOn);
+
+        if (AppearanceSystem.TryGetData<bool>(uid, PdaVisuals.IdCardInserted, out var isCardInserted, args.Component))
+            args.Sprite.LayerSetVisible(PdaVisualLayers.IdLight, isCardInserted);
+    }
+
+    public enum PdaVisualLayers : byte
+    {
+        Base,
+        Flashlight,
+        IdLight
+    }
+}