simplified filtering of contributors/contributions

[jspaaks]

Description

This PR simplifies the approach from @abelsiqueira 's PR #45 using map and filter

Related issues:

• 45

• 36

Instructions to review the pull request

• Make a GitHub Access token here https://github.com/settings/tokens
  • Make sure you copy it when it appears on screen, because you can't see it again. You can reset it, though.
• export GITHUB_TOKEN as an environment variable with the token above
• install Node >= 14

• cd $(mktemp -d --tmpdir cffbot-XXXXXX)
  git clone https://github.com/cffbots/filtering .
  git checkout <this-branch>
  npm install
  node query.mjs

Resulting list:

https://github.com/citation-file-format/cff-converter-python
https://github.com/citation-file-format/cff-initializer-javascript
https://github.com/citation-file-format/cffconvert-github-action
https://github.com/citation-file-format/citation-file-format
https://github.com/CLARIAH/grlc
https://github.com/eWaterCycle/ewatercycle
https://github.com/fair-software/fairtally
https://github.com/fair-workflows/nanopub
https://github.com/NLeSC/mcfly
https://github.com/NLeSC/python-template
https://github.com/phenology/cgc
https://github.com/research-software-directory/research-software-directory
https://github.com/tortellini-tools/action
https://github.com/wadpac/GGIR
https://github.com/xenon-middleware/xenon

[jspaaks]

Thanks for the review!