feat: add option `log-unchanged-files`

[evolkmann]

• Added a new option log-unchanged-files
• The default is true, so the behavior of the program will not change unless someone uses this new flag
• When false, the file content is the same ...-logs will not appear
• My motivation was a project of mine with thousands of files in which only a few change with each deployment
• After reviewing and merging, I would like to add this functionality to the GH Action as well

Let me know if there is anything you would like to change! 🙂

[SamKirkland]

Hey thanks for the PR!

How does this from the --log-level: minimal option?