feat(publish): comment on github issues

[kettanaito]

Changes

• Parse issue references from commit messages and commit bodies.
• Parse issue references from relevant pull requests (i.e. pull request references in the squash commit).
• Fetch referenced issues' details.
• Comment on all issues/pull requests relevant to the release.
• Change release commit message to resemble that of semantic-release:

chore(release): v1.2.3

Roadmap

• Decide on the exact release comment wording