add custom api docs template to address a11y issues

[ericbuckley]

Description

Developing a custom Handlebars template for Redoc to generate API documentation. This template enables us to override CSS rules and execute JavaScript functions to modify HTML tag attributes, aiming to resolve known accessibility (a11y) issues.

Related Issues

closes #198

Additional Notes

Using axe devtools to identify and help correct known a11y issues. These changes have resolved all known serious, critical, moderate and minor issues according to axe.

<--------------------- REMOVE THE LINES BELOW BEFORE MERGING --------------------->

Checklist

Please review and complete the following checklist before submitting your pull request:

• I have ensured that the pull request is of a manageable size, allowing it to be reviewed within a single session.
• I have reviewed my changes to ensure they are clear, concise, and well-documented.
• I have updated the documentation, if applicable.
• I have added or updated test cases to cover my changes, if applicable.
• I have minimized the number of reviewers to include only those essential for the review.

Checklist for Reviewers

Please review and complete the following checklist during the review process:

• The code follows best practices and conventions.
• The changes implement the desired functionality or fix the reported issue.
• The tests cover the new changes and pass successfully.
• Any potential edge cases or error scenarios have been considered.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.68%. Comparing base (f0d035a) to head (269b9b2).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #216   +/-   ##
=======================================
  Coverage   97.68%   97.68%           
=======================================
  Files          32       32           
  Lines        1645     1645           
=======================================
  Hits         1607     1607           
  Misses         38       38           

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[m-goggins]

Looks good!