Register format ``html`` to ``Cosmology.write`` with nice mathjax

Cosmology can now read and write to files. It would be nice to register with Cosmology.write a method for exporting a Cosmology to a HTML table. There are good examples of IO with Cosmology at https://github.com/astropy/astropy/tree/main/astropy/cosmology/io and documentation at https://docs.astropy.org/en/latest/cosmology/io.html#cosmology-io

I’m thinking the write_html(...) method would call cosmology.io.table.to_table(), format the table to nice MathJax or something and then call the QTable.write(..., format='html').

Edit: also, the mathjax representation of each parameter can be stored on the corresponding Parameter object, like how units have the format argument in def_unit.

[JefftheCloudDog]

Thanks for the response! I created a draft pull request for this issue. I did try to adhere to the instructions, but since this is my first contribution, there might be some mistakes. Please let me know if there are any issues.

[nstarman]

@JefftheCloudDog that would be great! No one else is currently working on this feature request. If you need any help or have any questions I am happy to help. You can post here, or in the Astropy Slack cosmology channel. We also have documentation to assist in contributing at https://www.astropy.org/contribute.html#contribute-code-or-docs.