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/artists/components/album-artist-detail-top-songs-list-header.tsx

@@ -54,10 +54,10 @@ export const AlbumArtistDetailTopSongsListHeader = ({
           >
             <Group noWrap>
               <TextTitle
-                fw="bold"
                 maw="20vw"
                 order={3}
                 overflow="hidden"
+                weight={700}
               >
                 {title}
               </TextTitle>