This patch completes the work started in creating a remote driver:
- Renames the env driver to the remote driver (an alternative suggestion
that should be more user-friendly)
- Adds support for TLS to encrypt connections with buildkitd
- Fixes outstanding review comments
- Reworks the buildx create command endpoint construction to be clearer
and include better support for this new driver.
Signed-off-by: Justin Chadwell <me@jedevc.com>
