Add troll stronghold portal icon support to POH (#5404)

Closes #5376

runelite-client/src/main/java/net/runelite/client/plugins/poh/PohIcons.java

@@ -49,6 +49,7 @@ public enum PohIcons
 	ANNAKARL("annakarl", ANNAKARL_PORTAL, ANNAKARL_PORTAL_29349, ANNAKARL_PORTAL_29357),
 	KOUREND("kourend", KOUREND_PORTAL, KOUREND_PORTAL_29353, KOUREND_PORTAL_29361),
 	MARIM("marim", MARIM_PORTAL, MARIM_PORTAL_29352, MARIM_PORTAL_29360),
+	TROLLSTRONGHOLD("trollheim", TROLL_STRONGHOLD_PORTAL, TROLL_STRONGHOLD_PORTAL_33180, TROLL_STRONGHOLD_PORTAL_33181),
 	ALTAR("altar",
 		ALTAR_13179, ALTAR_13180, ALTAR_13181, ALTAR_13182, ALTAR_13183, ALTAR_13184, ALTAR_13185, ALTAR_13186,
 		ALTAR_13187, ALTAR_13188, ALTAR_13189, ALTAR_13190, ALTAR_13191, ALTAR_13192, ALTAR_13193, ALTAR_13194,

runelite-client/src/main/java/net/runelite/client/plugins/poh/PohOverlay.java

@@ -44,7 +44,7 @@ public class PohOverlay extends Overlay
 	{
 		PohIcons.LUMBRIDGE, PohIcons.FALADOR, PohIcons.VARROCK, PohIcons.CAMELOT, PohIcons.ARDOUGNE,
 		PohIcons.YANILLE, PohIcons.LUNARISLE, PohIcons.WATERBIRTH, PohIcons.FISHINGGUILD,
-		PohIcons.SENNTISTEN, PohIcons.KHARYLL, PohIcons.ANNAKARL, PohIcons.KOUREND, PohIcons.MARIM
+		PohIcons.SENNTISTEN, PohIcons.KHARYLL, PohIcons.ANNAKARL, PohIcons.KOUREND, PohIcons.MARIM, PohIcons.TROLLSTRONGHOLD
 	};
 
 	private static final int MAX_DISTANCE = 2350;