Feature Request: Support setting global package

[EmmaRamirez]

One of the main pieces that would help speed up using git-labelmaker is including an option for using a package from a file as the default package to use when no input is given for Add Labels from Package. This way you can just simply use one package for all of your repos.

I'd definitely be willing to submit a PR if the maintainers think this is a good idea.

[himynameisdave]

@EmmaRamirez This is a great idea! Feel free to submit!

[himynameisdave]

@EmmaRamirez so if implemented, where would this global package live? Would there be a new option to create a global package, or would the user just be able to store it somewhere outside the local directory?

[EmmaRamirez]

Hmm, that's a good question. I'd imagine an option to create a global package, and storing it somewhere (arguably an absolute path based off OS)