Core should not have a dependency on API types.
This was causing a transative dependency on grpc when importing the core
snapshots package.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Allow the api to stay at the same v1 go package name and keep using a
1.x version number. This indicates the API is still at 1.x and allows
sharing proto types with containerd 1.6 and 1.7 releases.
Signed-off-by: Derek McGowan <derek@mcg.dev>
