This moves `pkg/config`, `pkg/client` and `pkg/constants`
under `pkg/machinery` umbrella.
And `pkg/machinery` is published as Go module inside Talos repository.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
This merges `osd` API into `machined`. API was copied from `osd` into
`machined`, and `osd` API was deprecated.
For backwards compatibility, `machined` still implements `osd` API, so
older Talos API clients can still talk to the node without changes.
Docs were updated. No functional changes.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>