docs: furo theme

[Borda]

Before submitting

• [x] Was this discussed/approved via a Github issue? (no need for typos, doc improvements)
• [x] My code follows the style guidelines of this project, see the contributor guideline
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes

What does this PR do?

Fixes # (issue).

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

PR review

Anyone in the community is free to review the PR once the tests have passed. If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

Did you have fun?

Make sure you had fun coding 🙃

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[codecov[bot]]

Codecov Report

Merging #64 (8fc6fde) into master (19876ac) will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #64   +/-   ##
=====================================
  Coverage      93%    93%           
=====================================
  Files          10     10           
  Lines        1746   1746           
=====================================
  Hits         1625   1625           
  Misses        121    121