api: add actor overhead cycle accessors

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

@@ -347,6 +347,20 @@ public interface Actor extends Renderable
 	 */
 	void setOverheadText(String overheadText);
 
+	/**
+	 * Get the number of cycles/client ticks remaining before the overhead text is timed out
+	 *
+	 * @return
+	 */
+	int getOverheadCycle();
+
+	/**
+	 * Set the number of cycles/client ticks before the overhead text is timed out
+	 *
+	 * @param cycles
+	 */
+	void setOverheadCycle(int cycles);
+
 	/**
 	 * Returns true if this actor has died
 	 *