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/settings/components/general-tab.tsx

@@ -196,7 +196,7 @@ export const GeneralTab = () => {
   ];
 
   return (
-    <Stack spacing="xl">
+    <Stack spacing="md">
       {options
         .filter((o) => !o.isHidden)
         .map((option) => (

src/renderer/features/settings/components/playback-tab.tsx

@@ -360,7 +360,7 @@ export const PlaybackTab = () => {
   ];
 
   return (
-    <Stack spacing="xl">
+    <Stack spacing="md">
       {playerOptions
         .filter((o) => !o.isHidden)
         .map((option) => (