docs: migrate docs from Prismic to GitHub

[angeloashmore]

Types of changes

• [x] Chore (a non-breaking change which is related to package maintenance)
• [ ] Bug fix (a non-breaking change which fixes an issue)
• [ ] New feature (a non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Description

This PR migrates docs from https://prismic.io/docs to this GitHub repository

Checklist:

• [x] My change requires an update to the official documentation.
• [x] All TSDoc comments are up-to-date and new ones have been added where necessary.
• [x] All new and existing tests are passing.

[codecov-commenter]

Codecov Report

Merging #536 (82a2cc6) into v6 (5719f43) will not change coverage. The diff coverage is n/a.

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@@           Coverage Diff           @@
##               v6     #536   +/-   ##
=======================================
  Coverage   89.13%   89.13%           
=======================================
  Files          47       47           
  Lines        3680     3680           
  Branches      253      253           
=======================================
  Hits         3280     3280           
  Misses        398      398           
  Partials        2        2