Small fixes to I/O documentation

[isaacgsmith]

This is a follow up to my pull requests restructuring the documentation which ties up some loose ends in the I/O documentation.

Description

Changes include:

• Editing the atomic data configuration page to link Carsus
• Adding a section that I forgot to add on the plasma configuration page
• Creating virtual packet logging documentation
• Added a callbacks page to the additional output section

How has this been tested?

• Testing pipeline.
• Documentation built locally and on GitHub.

Examples

View the built documentation here:
https://smithis7.github.io/tardis/branch/io-quick-fixes/

Type of change

• Bug fix.
• New feature.
• Breaking change.
• None of the above.

Checklist

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • (optional) I have built the documentation on my fork following the instructions.
• I have assigned and requested two reviewers for this pull request.

[tardis-bot]

Before a pull request is accepted, it must meet the following criteria:

• Is the necessary information provided?
• Is this a duplicate PR?
  • If a new PR is clearly a duplicate, ask how this PR is different from the original PR?
  • If this PR is about to be merged, close the original PR with a link to this new PR that solved the issue.
• Does it pass existing tests and are new tests provided if required?
  • The test coverage should not decrease, and for new features should be close to 100%.
• Is the code tidy?
  • No unnecessary print lines or code comments.

[codecov]

Codecov Report

Merging #1660 (0422f31) into master (eaab7a1) will not change coverage.
The diff coverage is n/a.

❗ Current head 0422f31 differs from pull request most recent head ee37e13. Consider uploading reports for the commit ee37e13 to get more accurate results

@@           Coverage Diff           @@
##           master    #1660   +/-   ##
=======================================
  Coverage   61.89%   61.89%           
=======================================
  Files          62       62           
  Lines        5732     5732           
=======================================
  Hits         3548     3548           
  Misses       2184     2184           

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[wkerzendorf]

@smithis7 can you rebase?

[isaacgsmith]

@smithis7 can you rebase?

I did a merge commit (I'm still working on getting good at rebasing) but I solved the conflict.

[jaladh-singhal]

Looks good - just have few additional suggestions that are related to this PR

[jaladh-singhal]

Thanks for the changes!