changed icon for gitfolders and git related files

[mashehu]

Description

Changes the git icon to a non-text version:
Before:

After:

The folder icon can be a bit difficult to read on low-res screens, but I prefer to have it in a folder shape compared to reusing the file icon.

• Relevant Issues : change git icon #207
• Relevant PRs : (none)
• Type of change :
  • New feature
  • Bug fix for existing feature
  • Code quality improvement
  • Addition or Improvement of tests
  • Addition or Improvement of documentation

[avdv]

Thanks @mashehu, but I am a bit reluctant to change the icons since it's merely a matter of taste. Although you have a valid point that a folder's icon looks better as a folder, not just coloured like a folder.

You know that you can change the icons for yourself to your liking? See https://github.com/athityakumar/colorls#custom-configurations

As I said, I am not so sure right now, maybe when a few people show thumbs up for this change...