[FEAT] More flexible stable release automaiton

[NeonDaniel]

Objective

Major/Minor release automations currently include a version bump such that 0.1.2a3 minor release would increment to 0.2.0 and 1.2.3a4 major release would increment to 2.0.0. OVOS (and other) packages may manually increment to 0.1.0aX, in which case a minor release would be 0.1.0.

Initial Implementation Requirements

• Include an option to propose a release without incrementing versions (i.e. 0.1.0aX -> 0.1.0 OR 2.0.0aX -> 2.0.0)

Other Considerations

• Something like a major release from 2.1.0aX should release 3.0.0

Perhaps a special value for version_spec could be used to just remove alpha with no other changes to the version?