feat: increase support for multiple time zones

apps/backend-mock/api/user/setTimezone.ts

@@ -0,0 +1,14 @@
+import { eventHandler, readBody } from 'h3';
+import { verifyAccessToken } from '~/utils/jwt-utils';
+import { unAuthorizedResponse, useResponseSuccess } from '~/utils/response';
+import { setTimezone } from '~/utils/timezone-utils';
+
+export default eventHandler(async (event) => {
+  const userinfo = verifyAccessToken(event);
+  if (!userinfo) {
+    return unAuthorizedResponse(event);
+  }
+  const { timezone } = await readBody(event);
+  setTimezone(timezone);
+  return useResponseSuccess();
+});