add 30 min active user histogram

packages/db/src/clickhouse-client.ts

@@ -49,3 +49,7 @@ export function formatClickhouseDate(_date: Date | string) {
   const date = typeof _date === 'string' ? new Date(_date) : _date;
   return date.toISOString().replace('T', ' ').replace(/Z+$/, '');
 }
+
+export function convertClickhouseDateToJs(date: string) {
+  return new Date(date.replace(' ', 'T') + 'Z');
+}