The increment of the branch will be ignored when prevent-increment is set to true on the branch

[HHobeck]

Detailed Description

Introduce a new branch related property of name prevent-increment-when-branch-merged. This property can be used like the prevent-increment-of-merged-branch property to control the behavior of how to increment the version when a branch has been merged.

The configuration could be look like as following:

prevent-increment:
  of-merged-branch: false
  when-branch-merged: false # new branch related property
  when-current-commit-tagged: true

Context

Following business statements applying:

• The increment of the branch merged to will be ignored, regardless of whether the merged branch has a version number or not, when prevent-increment-of-merged-branch is set to true on the target branch
• The increment of the merged branch will be ignored when prevent-increment-when-branch-merged is set to true on the source branch

Close #3922

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[mergify]

Thank you @HHobeck for your contribution!