Feature request: Integration with *git* for version control of fittings

[ghost]

Feature request: Integration with git for version control of fittings

Currently I version control fittings from XML export of Eve client using git. It would be convenient to do that all within the PyFa app, like a fitting IDE (Integrated Fitting Environment?) for development.

Release or development git branch? Please note the release version or commit hash:

2.40.0

Operating system and version (eg: Windows 10, OS X 10.9, OS X 10.11, Ubuntu 16.10):

Mint 20.3 LTS (Ubuntu 20.04 LTS)