add installing on btrfs subvolumes support into the installer
since i use fedora 41 that is installed on a btrfs partition with subvolumes, if i need to migrate to another system, i want to make sure i can install it on a customized subvolume table without formatting all the subvolumes (so i can keep the home untouched)
fedora installer handled this easily thanks to blivet-gui partitioner
currently my subvolumes table are"
1. @ (root)
2. @home (home)
3. @snapshots (snapshots)
4. @var (/var)
fedora installer handled this easily thanks to blivet-gui partitioner
currently my subvolumes table are"
1. @ (root)
2. @home (home)
3. @snapshots (snapshots)
4. @var (/var)
