Skeletons are now playable instruments (#40009)

* skeletons are now instruments

* switch to xylophone

* Fixes

---------

Co-authored-by: Jessica M <jessica@maybe.sh>
Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>

Resources/Prototypes/Entities/Mobs/Species/skeleton.yml

@@ -109,6 +109,24 @@
           32:
             sprite: Mobs/Species/Human/displacement.rsi
             state: jumpsuit-female
+  - type: Instrument
+    program: 13 # Xylophone. Woodblock is 115 (another good option)
+  - type: ActivatableUI
+    blockSpectators: true # otherwise they can play client-side music
+    inHandsOnly: false
+    singleUser: true
+    requiresComplex: true
+    verbOnly: true
+    verbText: verb-instrument-openui
+    key: enum.InstrumentUiKey.Key
+  - type: UserInterface
+    interfaces:
+      enum.InstrumentUiKey.Key:
+        type: InstrumentBoundUserInterface
+      enum.HumanoidMarkingModifierKey.Key:
+        type: HumanoidMarkingModifierBoundUserInterface
+      enum.StrippingUiKey.Key:
+        type: StrippableBoundUserInterface
 
 - type: entity
   parent: BaseSpeciesDummy