Updates to citation and authors

[tavareshugo]

I have now added a CITATION.cff file to the repo, which we could start using to record author/editor information in a standard format.
This is also automatically picked by GitHub and integrates with Zenodo.

In addition, I have added a new quarto shortcode ({{< citation >}}), which automatically populates the citation and author information on the front page, so this doesn't have to be done manually anymore.

Existing repositories will have to be updated to include the CFF file as well as the new shortcode.
This has to be done for each repo:

• Update the extension with quarto update extension cambiotraining/quarto-course-template
• Create a CITATION.cff file in the top-level directory (see example on this repo)
• Modify index.md to use the new shortcode (see example on this repo)

Using this issue to keep track of repos where I'd like to do this:

• Unix
• HPC
• Bacterial genomics
• SARS
• proteomics
• software & pipelines
• chipseq
• protein structure modelling
• metagenomics
• mixed models