feat(admin-ui): adds category ui for tree/list, edit, create, delete (#3399)

* chore: adds category ui for tree/list, edit, create, delete

* fix: address feedback

---------

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>
Co-authored-by: fPolic <frane@medusajs.com>

packages/admin-ui/package.json

@@ -63,6 +63,7 @@
     "react-hotkeys-hook": "^3.4.7",
     "react-json-tree": "^0.17.0",
     "react-jwt": "^1.1.4",
+    "react-nestable": "^2.0.0",
     "react-router-dom": "^6.8.0",
     "react-select": "^5.5.4",
     "react-table": "^7.7.0",