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-header.tsx

@@ -46,7 +46,7 @@ export const AlbumArtistDetailHeader = forwardRef(
           item={{ route: AppRoute.LIBRARY_ALBUM_ARTISTS, type: LibraryItem.ALBUM_ARTIST }}
           title={detailQuery?.data?.name || ''}
         >
-          <Stack mt="1rem">
+          <Stack>
             <Group>
               {metadataItems
                 .filter((i) => i.value)