[plugin-github] Create release even when there's no changelog

[gabormagyar]

Is your feature request related to a problem? Please describe.

Problem: Packages in a monorepo can get a version bump and a release because their dependencies were updated, but in this case they get no changelog.

GitHub release plugin then says:

[GitHub Plugin] Skipping release for package as there's no changelog.

Describe the solution you'd like

I would like the plugin to create an empty release, or maybe even a release with "no changelog" or "dependencies updated" or something similar, but certainly not to swallow the fact that a release happened.

Describe alternatives you've considered

Perhaps hide this behind a config flag if this isn't a default desired behavior.

[noahnu]

Released in https://github.com/tophat/monodeploy/releases/tag/%40monodeploy%2Fplugin-github%400.5.0

See docs: https://tophat.github.io/monodeploy/plugins#github