Feature/use second level mui imports (#743)

* Require "Theme" to be passed to "SxProps"

Decreases typescript performance otherwise

* Disallow "top" and "third-level" MUI imports

* Exclude "node_modules" in tsconfig

src/components/settings/text/TextSettingDialog.tsx

@@ -6,7 +6,9 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
 
-import { Button, Dialog, DialogTitle } from '@mui/material';
+import Button from '@mui/material/Button';
+import Dialog from '@mui/material/Dialog';
+import DialogTitle from '@mui/material/DialogTitle';
 import DialogContent from '@mui/material/DialogContent';
 import DialogContentText from '@mui/material/DialogContentText';
 import TextField from '@mui/material/TextField';