Add "The Rules" archetype

[ddbeck]

View a more cleanly rendered version here: https://github.com/ddbeck/opendocs/blob/the-rules/project_archetypes/rules.md

[emckean]

oof, not sure what I did to get this in conflict?

[ddbeck]

Ah, it was because the stub was added in a previous PR. I merged main and resolved the conflicts. This should be ready for re-review now.

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