Add git GUI option to the Code on the Go main screen

[Ben-ADFA]

Ref. 2968

Issue Checklist

• I confirm that this feature request has not been previously suggested.
• I agree to follow the project's code of conduct.
• I have checked and verified that I am using the latest version of Code on the Go from GitHub or App Dev for All.

Additional terms

• I understand that feature requests are subject to evaluation and may not be implemented immediately.
• I agree to provide additional details if needed for a clearer understanding of the requested feature.

Feature description

On Telegram, Java adalah | LunarisAosp (@Java_nih_deks) has requested a git GUI option on the start screen (see example image).

Use Case

Users may want to download existing projects from a git repo.

Benefits

The GUI avoids the need for terminal commands, and can be accessed directly from the start screen for convenience.