Adds support for using `bootc` as the preferred method for booting from
a locally created image. This new method gets rid of the need to create
a tarball and move it to the correct place and instead it will make use
of `podman scp` which copies the image to the root `containers-storage`
and then has `rpm-ostree` and `bootc` boot from that store.
Closes#418Closes#200
This updates the `template` subcommand to be `generate`. The `template`
usage will continue to work as an alias to `generate`. A new `switch`
command is added that will manage both `rpm-ostree rebase` and
`rpm-ostree upgrade` and is fully replacing the respective subcommands
as a breaking change.
The new `switch` command is under the feature flag `switch` and will
currently only build for the `main` branch builds until it is moved as a
default feature (`v0.9.0`).
Closes#159
