Add itemId to debug tool on rightclick

Just makes it easier, don't need to inspect element then enter
the id anymore

public/board.js

@@ -1266,6 +1266,7 @@ canvas.addEventListener('contextmenu', function(event) {
 			// Compare the event XY position to the item
 			if(clickableCheck(x,y,itemKey)){
 				console.log('itemId: '+itemKey);
+				document.getElementById('effectTargetId').value = itemKey;
 				// Only want to happen once (for now)
 				// Maybe in future add to hand would trigger another event if there's an effect?