Removing outdated documentation and creating developer tools section

[isaacgsmith]

📝 Description

Type: 📝 documentation

Removes outdated documentation as per a discussion at TARDIScon. Users may look back in the repo if they want to see the old documentation.

Also moves two parts of the outdated documentation and the profiling documentation to a new "Developer Tools" section.

See https://tardis-sn.github.io/tardis/pull/2095/contributing/tools/index.html

🚦 Testing

How did you test these changes?

• Testing pipeline
• Other method (describe)
• My changes can't be tested (explain why)
  Docs build pipeline.

☑️ Checklist

• I requested two reviewers for this pull request
• I updated the documentation according to my changes
• I built the documentation by applying the build_docs label

Note: If you are not allowed to perform any of these actions, ping (@) a contributor.

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[codecov]

Codecov Report

Merging #2095 (dab5668) into master (79f2fc3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2095   +/-   ##
=======================================
  Coverage   61.54%   61.54%           
=======================================
  Files          75       75           
  Lines        8635     8635           
=======================================
  Hits         5314     5314           
  Misses       3321     3321           

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