LibIMAP: Support for STORE and STATUS

Author: https://github.com/X-yl
Commit: 076c708d0a
Pull-request: https://github.com/SerenityOS/serenity/pull/7735
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/MaxWipfli
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibIMAP/Client.h

@@ -26,8 +26,10 @@ public:
     RefPtr<Promise<Optional<SolidResponse>>> select(StringView string);
     RefPtr<Promise<Optional<SolidResponse>>> search(Optional<String> charset, Vector<SearchKey>&& search_keys, bool uid);
     RefPtr<Promise<Optional<SolidResponse>>> fetch(FetchCommand request, bool uid);
+    RefPtr<Promise<Optional<SolidResponse>>> store(StoreMethod, Sequence, bool silent, Vector<String> const& flags, bool uid);
     RefPtr<Promise<Optional<ContinueRequest>>> idle();
     RefPtr<Promise<Optional<SolidResponse>>> finish_idle();
+    RefPtr<Promise<Optional<SolidResponse>>> status(StringView mailbox, Vector<StatusItemType> const& types);
 
     void close();