Add Envio to data indexers

[Jordy-Baby]

This adds Envio to the Data Indexers page.

Envio is a high-performance indexing framework that turns smart contract events into a queryable GraphQL API. Its HyperIndex framework supports indexing any EVM chain out of the box, including Flow EVM, using your own RPC as the data source, with fully managed hosting on Envio Cloud or self-hosting. The entry mirrors the existing provider sections.

Links:

• Website: https://envio.dev/
• Docs: https://docs.envio.dev/

[vercel]

@Jordy-Baby is attempting to deploy a commit to the Flow Team on Vercel.

A member of the Team first needs to authorize it.

[Jordy-Baby]

Hey @briandoyle81, we'd love to have Envio listed here and I've kept it consistent with the existing providers. Let me know if you need anything else from my end.

For reference, here are Envio's performance benchmarks: https://docs.envio.dev/docs/HyperIndex/benchmarking?utm_source=flow&utm_medium=partner-docs

[Jordy-Baby]

Gentle bump on this one. No rush at all. If any tweak to the wording, formatting or placement would help it land, just say the word and we will turn it around quickly.

Also worth flagging that the failing Vercel check here looks like a preview deployment issue on the account side rather than anything in this change. The diff itself still merges cleanly.