Outputs should include individual version parts

[jefflinse]

It would be useful for the action outputs to include the version parts as individual output variables. Ideally this should include:

• old-major-
• old-minor-
• old-patch-
• major-version
• minor-version
• patch-version

This would allow downstream tasks and jobs that require version information to be able to obtain it independent of whether the v prefix was used for the tag and release.