Automate release process

[adambkaplan]

As is the case with the build controller, the command line should also have an automated release process driven by GitHub Actions.

The release should include the following:

• Cross compiled binaries
• Checksums for binaries
• Generated release notes
• Long term: Signed binaries for respective platforms (macOS and Windows in particular).

[otaviof]

That might be a duplicate of #23, for the record.

[adambkaplan]

/close

Let's run with the GoReleaser approach in #23

[openshift-ci]

@adambkaplan: Closing this issue.

In response to this:

/close

Let's run with the GoReleaser approach in #23

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