Generate documentation from existing jsdoc annotations

[cbutcosk]

There are jsdoc annotations throughout the quire codebase that are currently not published anywhere. Merged with the YAML surveys of thegetty/quire-docs#802 it would probably make a decent form of developer-centric API documentation.

There are a few complications to consider (mostly just jsdoc care and feeding):

• excludePattern from the CLI's jsdoc configuration would need adjusted as the default pattern excludes path components starting with "_".
• Small adjustments to annotation formats, which are not all formatted correctly and break the documentation build.
• Some additional jsdoc configuration is needed to render directory-level README.md files as the readme for a tier of documentation and produce an overall table of contents.
• Some level of indexing (even if just to the directory tiers with README.md files?) would be nice.
• Other user-level or output format considerations, including deployment of the resulting documentation (as a directory in the docs site?)