Require API docs for all public API surfaces

[scouten-adobe]

Related: Generate crate-level docs from README.

[codecov]

Codecov Report

Merging #51 (39e1e5b) into main (39e1e5b) will not change coverage.
The diff coverage is n/a.

❗ Current head 39e1e5b differs from pull request most recent head 8e783c1. Consider uploading reports for the commit 8e783c1 to get more accurate results

@@           Coverage Diff           @@
##             main      #51   +/-   ##
=======================================
  Coverage   92.13%   92.13%           
=======================================
  Files           4        4           
  Lines         267      267           
=======================================
  Hits          246      246           
  Misses         21       21           

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