Docs: rebrand

[emmercm]

Fixes: #715

[github-actions]

🧪 Branch testing instructions

This pull request can be tested locally with the following command:

npm exec --yes -- "github:emmercm/igir#emmercm/rebrand" [commands..] [options]

Comment generated by the Pull Request Commenter workflow.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.09%. Comparing base (7fabb9a) to head (eeac5e3).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1035      +/-   ##
==========================================
- Coverage   93.35%   93.09%   -0.27%     
==========================================
  Files          92       92              
  Lines        6036     6036              
  Branches     1438     1438              
==========================================
- Hits         5635     5619      -16     
- Misses        380      395      +15     
- Partials       21       22       +1     

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