Add config option to set Git binary path

[ewancg]

I think it's important to have the ability to set the path to Git explicitly through the config json. We are already able to do this for LSP binaries where the source is uncertain or varies across platforms. Bundled Git is disabled on Windows, and the editor seems unable to find Git when both are installed via. MSYS2.

[aeroaks]

I am using "Git for Windows" and the Git Panel does not detect the repo in my folder.

[ewancg]

Since posting this I've learned that MSYS2 is not an officially supported target by Zed (very sad)! However, Git for Windows is using the same mechanisms as MSYS2 is, and I'm not sure what users are expected to use otherwise.

[aeroaks]

What is the official way to use Git on Windows?

[ewancg]

Git for Windows (if not using WSL2).

[aeroaks]

Git fir windows is part of the package i use for my setup but the repo in the folder is not recognized. I am trying find the docs part that covers this