[Feature]: Plugin: LineEndingCheck: Use GitPython

[Javagedes]

Feature Overview

GitPython was adopted by edk2-pytool-extensions, and per the documentation in the LineEndingCheck plugin, we can switch the current git shell commands for GitPython

    # Note: This function currently accesses git via the git command to prevent
    #       introducing a new Python git module dependency in mu_basecore
    #       on gitpython.
    #
    #       After gitpython is adopted by edk2-pytool-extensions, this
    #       implementation can be updated to use the gitpython interface.

Solution Overview

Switch the LineEndingCheck plugin from running raw shell commands to using a well-maintained library (GitPython) instead. Possibly evaluate if any other plugins use raw git commands and switch them to GitPython also.

Alternatives Considered

No response

Urgency

Low

Are you going to implement the feature request?

I will implement the feature

Do you need maintainer feedback?

No maintainer feedback needed

Anything else?

No response