runelite-api: add headicon enum

runescape-api/src/main/java/net/runelite/rs/api/RSNPCComposition.java

@@ -74,6 +74,5 @@ public interface RSNPCComposition extends NPCComposition
 	int getSize();
 
 	@Import("headIcon")
-	@Override
-	int getOverheadIcon();
+	int getRsOverheadIcon();
 }

runescape-api/src/main/java/net/runelite/rs/api/RSPlayer.java

@@ -59,6 +59,5 @@ public interface RSPlayer extends RSActor, Player
 	boolean isFriend();
 
 	@Import("overheadIcon")
-	@Override
-	int getOverheadIcon();
+	int getRsOverheadIcon();
 }