- remove Pool from public interfaces
- remove pool_dir from MirrorConfig, rename base_dir to dir
- add mirror::{init,destroy,gc,list_snapshots, remove_snapshot}
- rename mirror::mirror to mirror::create_snapshot
- move ParsedMirrorConfig into mirror module
- add new helpers in medium.rs
- use Snapshot in more places
- make Snapshot (de)serializable and sort/comparable
- move Snapshot into types.rs
- reduce visibility where possible
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
