Add release channel publish command

[sfc-gh-melnacouzi]

Pre-review checklist

• I've confirmed that instructions included in README.md are still correct after my changes in the codebase.
• I've added or updated automated unit tests to verify correctness of my new code.
• I've added or updated integration tests to verify correctness of my new code.
• I've confirmed that my changes are working by executing CLI's commands manually on MacOS.
• I've confirmed that my changes are working by executing CLI's commands manually on Windows.
• I've confirmed that my changes are up-to-date with the target branch.
• I've described my changes in the release notes.
• I've described my changes in the section below.

Changes description

Add release channel publish command:
snow app publish --version v1 --patch 0 [--directive d] [--channel c]

This command will:

• add the version to the release channel if not already there
• check if there is space in the release channel - if not remove old unused versions from there.
• set the specified the release directive to the version and patch specified in the input.

[sfc-gh-xke]

Approve it since @sfc-gh-gbloom has approved before the rebase.