Create citation.cff for DART

[ann-norcio]

Description:

Add a citation.cff file to help users correctly cite DART software. Creates a link to cite the repository on the landing page sidebar.

Fixes issue

fixes https://github.com/NCAR/DART/issues/643

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update

Documentation changes needed?

• [ ] My change requires a change to the documentation.
  • [ ] I have updated the documentation accordingly.

Tests

Followed citation file formatting on Github Docs

Checklist for merging

• [ ] Updated changelog entry
• [ ] Documentation updated
• [ ] Update conf.py

Checklist for release

• [ ] Merge into main
• [ ] Create release from the main branch with appropriate tag
• [ ] Delete feature-branch

Testing Datasets

• [ ] Dataset needed for testing available upon request
• [ ] Dataset download instructions included
• [X] No dataset needed

[mgharamti]

Nice!

[ann-norcio]

Changed date-released format to "YYY-MM-DD" and names to name. Should work as expected now.

[hkershaw-brown]

mgharamti

oops @ the wrong moha @mgharamti

[mgharamti]

This looks good to me. Thanks Ann and Helen!