Relocate astro airflow deploy command

[andriisoldatenko]

@schnie i don't have access to upstream, I've created alternative version.

let's close this #229, all authors commits are here.

[andriisoldatenko]

astro airflow deploy -h
Command "deploy" is deprecated, Please use new command instead `astro deploy DEPLOYMENT [flags]`
Deploy an airflow project to a given deployment

Usage:
  astro airflow deploy DEPLOYMENT [flags]

Flags:
  -f, --force                 Force deploy if uncommitted changes
  -h, --help                  help for deploy
  -p, --prompt                Force prompt to choose target deployment
  -s, --save                  Save deployment in config for future deploys
      --workspace-id string   workspace assigned to deployment

[andriisoldatenko]

New command:

astro deploy -h
Deploy an airflow project to a given deployment

Usage:
  astro deploy DEPLOYMENT [flags]

Aliases:
  deploy, airflow deploy

Flags:
  -f, --force                 Force deploy if uncommitted changes
  -h, --help                  help for deploy
  -p, --prompt                Force prompt to choose target deployment
  -s, --save                  Save deployment in config for future deploys
      --workspace-id string   workspace assigned to deployment

[schnie]

LGTM!