api: add player id accessor

runelite-api/src/main/java/net/runelite/api/Player.java

@@ -32,6 +32,13 @@ import javax.annotation.Nullable;
  */
 public interface Player extends Actor
 {
+	/**
+	 * Get the ID of the player
+	 *
+	 * @return
+	 */
+	int getId();
+
 	@Override
 	int getCombatLevel();