[FEATURE] Support Contributions from multiple GitHub organizations

[langner]

I'm actually not sure if this is supported or not, but the README doesn't make it clear. Is it possible to set up the leaderboard so that it brings in contributions from multiple GitHub orgs? Our GSOC org is an umbrella that includes multiple GH orgs.

[shubhsherl]

Currently, we support contributions only from one GH org. This can be added to the Feature request.

[langner]

Is it a matter of inserting a loop somewhere and tweaking the config setup? I could do that.

[shubhsherl]

Yes, it just require a loop, feel free to open a PR.

[shubhsherl]

@langner We can add multiple organizations in .env separated by a comma. And split in getOrganizationRepositories function.