Add gffread

[emmarousseau]

Description

Add gffread component.

Checklist before requesting a review

• [x] I have performed a self-review of my code

• [x] Conforms to the Contributing guidelines

• [x] Proposed changes are described in the CHANGELOG.md

• [x] I have tested my code with viash ns test --parallel -q gffread

• Check the correct box. Does this PR contain:

  • [ ] Breaking changes
  • [x] New functionality
  • [ ] Major changes
  • [ ] Minor changes
  • [ ] Documentation
  • [ ] Bug fixes

[rcannood]

Thanks @emmarousseau!