Make AI Embeddings available to download as JSON and Markdown

[CharlieMc0]

Every time a change is to docs the OpenAi generated embeddings are updated and stored in a vector database. We should make these embeddings available to download as a JSON and/or Markdown file. These embeddings can be used to populate ChatGPT and other LLMs with the contents of the ZetaChain docs site.

The Workflow: https://github.com/zeta-chain/docs/blob/main/.github/workflows/reindex-embeddings.yaml

Making these embeds more available will allow people to build more useful AI assistants and agents.

End goal: JSON and Markdown copy of the embeddings are available to download from somewhere on the Docs website.