Add new ctrl/cmd - k search modal (#2467)

* add new search modal

* remove search modal from searchTab

* fix member avatar load for space with 2 member

* use media authentication when rendering avatar

* fix hotkey for macos

* add @ in username

* replace subspace minus separator with em dash

src/app/state/searchModal.ts

@@ -0,0 +1,3 @@
+import { atom } from 'jotai';
+
+export const searchModalAtom = atom<boolean>(false);