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/components/badge/index.tsx

@@ -10,7 +10,6 @@ const StyledBadge = styled(MantineBadge)<BadgeProps>`
   }
 
   .mantine-Badge-inner {
-    padding: 0 0.5rem;
     color: var(--badge-fg);
   }
 `;