Remove legacy online installer entrypoints, collapse migrations for 4.0, and move setup responsibilities into target-side system, hardware, and user commands.
* Change DM to SDDM
* Move to custom named UKI
* Skip creation on Mac
* Add entry to make sure VSCode uses gnome keyring
* Fix order for UKI generation
* Limine only
* BTRFS only
* Add checks for possible issues
* Remove
* Add verification to omarchy-pkg-add and speed up installs
* Use omarchy-pkg-add
* Update files to include dirs
* Fix relaunch
* Change DM to SDDM
* Move to custom named UKI
* Skip creation on Mac
* Add entry to make sure VSCode uses gnome keyring
* Fix order for UKI generation
* Limine only
* BTRFS only