Create GitHub/Gitea release

[silverwind]

Add an boolean option --release to create a GitHub or Gitea release using their API when bumping a new version. The body of the release should be the same as the commit changelog.

The github api token should be supplied from env var:

env.VERSIONS_GITHUB_API_TOKEN ||
env.GITHUB_API_TOKEN ||
env.GITHUB_TOKEN ||
env.GH_TOKEN ||
env.HOMEBREW_GITHUB_API_TOKEN;

The gitea api token should be supplied from env vars:

env.VERSIONS_GITEA_API_TOKEN ||
env.GITEA_API_TOKEN ||
env.GITEA_AUTH_TOKEN ||
env.GITEA_TOKEN;