feat: search options (#540)

* feat: search options

* feat: sanitize folder names

* fix: add cursor: pointer to switch

* fix: explicitly make the search bar a text input

* refactor: remove magic number

* refactor: extract Switch component to its own file

* refactor: split AppState into multiple files

* refactor: review comments

app/assets/javascripts/index.ts

@@ -2,7 +2,6 @@
 
 // css
 import '@reach/dialog/styles.css';
-import 'sn-stylekit/dist/stylekit.css';
 import '../stylesheets/index.css.scss';
 
 // Vendor