feat: add rustfmt configuration and CI workflow for code formatting

refactor: streamline formatting workflow by removing unused taplo steps and clarifying directory change

refactor: remove unnecessary directory change step in formatting workflow

src/components/setting/mods/hotkey-viewer.tsx

@@ -80,7 +80,7 @@ export const HotkeyViewer = forwardRef<DialogRef>((props, ref) => {
       });
       setOpen(false);
     } catch (err: any) {
-      showNotice('error', err.toString());
+      showNotice("error", err.toString());
     }
   });