Migrate documentation from jsonx_docs repository

[EthanThatOneKid]

Problem

The documentation currently lives in a separate repository (https://github.com/FartLabs/jsonx_docs/), which creates maintenance overhead:

• Two repositories to manage, update, and sync
• Additional overhead for CI/CD, issues, and permissions
• Harder to keep docs in sync with code changes
• Fragmented contributor experience

Proposal

Migrate the documentation from into this repository, likely under a directory. This would:

• Centralize all project assets in one place
• Simplify documentation updates (PRs can include both code and docs)
• Reduce maintenance burden
• Improve contributor experience

Migration Steps

1. Copy all content from to in this repo
2. Update any relative links and references
3. Archive or deprecate the repository (or mark as read-only)
4. Update any links in README, websites, etc. pointing to the old docs repo

Would anyone be opposed to consolidating the repos? Happy to help with the migration if there's agreement.