timers: Track imbued heart timer from varbit

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

@@ -529,6 +529,13 @@ public enum Varbits
 	VENGEANCE_COOLDOWN(2451),
 	CORRUPTION_COOLDOWN(12288),
 
+	/**
+	 * Imbued Heart cooldown
+	 * Number of game tick remaining on cooldown in intervals of 10; for a value X there are 10 * X game ticks remaining.
+	 * The heart regains its power once this reaches 0.
+	 */
+	IMBUED_HEART_COOLDOWN(5361),
+
 	/**
 	 * Amount of items in each bank tab
 	 */