Expand "Authoring Guide"

[amotl]

About

Going forward, the "Authoring Guide" wants to absorb more content, to maintain it all in a single place, and provide it nicely rendered.

• https://crate-docs-theme.readthedocs.io/en/latest/authoring.html

Details

• Style Guide from crate-docs:style/*.rst
• Guidelines about utility support, e.g. about linksmith

References

• https://github.com/crate/crate-docs/tree/main/style
• Explore Sphinx inventory labels crate-docs#105
• Documentation UX: Reconsider placement and handling of reference links cratedb-guide#372
• https://github.com/crate/tech-writing/blob/main/README.md
• https://github.com/crate/crate-docs-theme/blob/main/DEVELOP.rst