don't error when git-together.active git config is not found

[softprops]

Thanks for making this tool. It's been very helpful for growing collaborative practices in my org.

A paper cut felt among engineers relates to the practice of aliasing git with git-together and interacting with repositories that have opted out if git together config. The UX looks a bit like this atm

git commit -m "making changes"
Error: error getting git config for 'git-together.active'
Caused by: config value 'git-together.active' was not found; class=Config (7); code=NotFound (-3)

which causes friction and friction is a turn off for wider adoption. It would be great if instead this tool emitted a warning so that its visible that this repo a person is interacting with is not yet configured for git-together but allowed the git process to continue