New pkgdown upgrades

[stufield]

Overview of Pull Request

Update the pkgdown site.
New look and feel
Bootstrap theme 5, etc.
New force-pkgdown special branch to publish to gh-pages

• protected special branch, never merge

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (dfd3003) 79.26% compared to head (e4f0dff) 79.26%.

❗ Current head e4f0dff differs from pull request most recent head bc0e079. Consider uploading reports for the commit bc0e079 to get more accurate results

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Additional details and impacted files

@@           Coverage Diff           @@
##             main      #39   +/-   ##
=======================================
  Coverage   79.26%   79.26%           
=======================================
  Files          30       30           
  Lines        1196     1196           
=======================================
  Hits          948      948           
  Misses        248      248           

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