introduce debounce on output updates + linked box

shared/ensure-debounce.ts

@@ -0,0 +1,16 @@
+export function debounceManager(debounceTime: number): { ensureDebounce: (fn: Function) => void } {
+
+    var curHandle: number | null = null;
+
+    return {
+        ensureDebounce: (fn: Function) => {
+            if (curHandle != null) {
+                clearInterval(curHandle);
+                curHandle = null;
+            }
+            curHandle = setTimeout(() => {
+                fn();
+            }, debounceTime);
+        }
+    }
+}