feat: add mobile ui to calendar

utils/debounce.ts

@@ -0,0 +1,10 @@
+export function debounce(func: Function, delay = 300) {
+  let debounceTimer: ReturnType<typeof setTimeout>
+  return function () {
+    // @ts-expect-error this in TypeScript
+    const context = this
+    const args = arguments
+    clearTimeout(debounceTimer)
+    debounceTimer = setTimeout(() => func.apply(context, args), delay)
+  }
+}