Refinements to allow direct commits to master, build skips with auto-merge
This MR refines a bit the commitfile command to introduce:
- Better log messages, more pertinent and with more information about what it is really doing
- The ability to commit directly to master (which is the default behaviour now)
- In merge-request creation mode, if
[ci skip]or[skip ci]is detected on the commit message, and auto-merge is set, then merge immediately