Review summary (#10196)

* Create review summary api to get information about reviewed and unreviewed events on each day

* remove unused

* Fix tests

* Format tests

* Fix

web/src/hooks/use-date-utils.ts

@@ -1,3 +1,4 @@
+import { FrigateConfig } from "@/types/frigateConfig";
 import { formatUnixTimestampToDateTime } from "@/utils/dateUtil";
 import { useMemo } from "react";
 
@@ -10,3 +11,15 @@ export function useFormattedTimestamp(timestamp: number, format: string) {
 
   return formattedTimestamp;
 }
+
+export function useTimezone(config: FrigateConfig | undefined) {
+  return useMemo(() => {
+    if (!config) {
+      return undefined;
+    }
+
+    return (
+      config.ui?.timezone || Intl.DateTimeFormat().resolvedOptions().timeZone
+    );
+  }, [config]);
+}