Add proper collection for citations & bibliography

The Docs section currently repeats full text of each citation in each markdown document. This can be handled better with a data collection (YAML or JSON) and by referencing the an id for each citation. For instance:

You can also export [BibTex](https://www.bibtex.org) to JSON with [Pandoc](https://pandoc.org/)

```
pandoc filename.bib -t csljson -o data/filename.json
```

Store data according to [CSL-JSON](https://citeproc-js.readthedocs.io/en/latest/csl-json/markup.html) spec and then render that in Hugo with Shortcodes and Partials