chore: import upstream snapshot with attribution

apps/webapp/app/utils/throttle.ts

@@ -0,0 +1,20 @@
+//From: https://kettanaito.com/blog/debounce-vs-throttle
+
+/** A very simple throttle. Will execute the function at the end of each period and discard any other calls during that period. */
+export function throttle<TArgs extends unknown[]>(
+  func: (...args: TArgs) => void,
+  durationMs: number
+): (...args: TArgs) => void {
+  let isPrimedToFire = false;
+
+  return (...args: TArgs) => {
+    if (!isPrimedToFire) {
+      isPrimedToFire = true;
+
+      setTimeout(() => {
+        func(...args);
+        isPrimedToFire = false;
+      }, durationMs);
+    }
+  };
+}