Migrate to mantine v6 (#15)

* Add letter spacing to cell text

* Set window control height in px

* Add temp unused routes

* Migrate text title font weights

* Bump mantine to v6 alpha

* Migrate modals / notifications

* Increase header bar to 65px

* Adjust play button props

* Migrate various components

* Migrate various pages and root styles

* Adjust default badge padding

* Fix sidebar spacing

* Fix list header badges

* Adjust default theme

src/renderer/features/action-required/components/server-required.tsx

@@ -3,7 +3,7 @@ import { Text } from '/@/renderer/components';
 export const ServerRequired = () => {
   return (
     <>
-      <Text size="xl">No server selected.</Text>
+      <Text>No server selected.</Text>
       <Text>Add or select a server in the file menu.</Text>
     </>
   );