✨ feat:debounce 유틸 추가

Issue Resolved: #

Author: qkdl60

front/src/utils/debounce.ts

@@ -0,0 +1,13 @@
+const setDebounce = (delayTime: number) => {
+  let timer: null | number = null;
+
+  return (callback: () => void) => {
+    if (timer) {
+      clearTimeout(timer);
+    }
+
+    timer = setTimeout(callback, delayTime * 1000);
+  };
+};
+
+export const changeSeatCountDebounce = setDebounce(3);