Add support for non-interactive inputs for uffizzi connect ghcr

[gadkins]

Similar to #95, we need to accept inputs non-interactively, using --flags and environment variables.

[antlu]

You can provide the credentials like this:

With options

uffizzi connect ghcr --username name --token ghp_ASD9sd72

-u and -t are also available.

With environment variables

export GITHUB_USERNAME=name
export GITHUB_ACCESS_TOKEN=ghp_ASD9sd72
uffizzi connect ghcr

[NealArw]

TESTED - OK

bash-5.1# bundle exec uffizzi connect ghcr
Github Username: Name
Access Token:
Successfully connected to GHCR

bash-5.1# bundle exec uffizzi connect ghcr --username Name --token ghp_
Successfully connected to GHCR


bash-5.1# bundle exec uffizzi connect ghcr -u Name -t ghp_
Successfully connected to GHCR

bash-5.1# bundle exec uffizzi connect ghcr
Successfully connected to GHCR

[NealArw]

TESTED on prod - OK