feat(inference): Add Hyperfusion Provider

[blizko]

Summary
This PR adds Hyperfusion as a new inference provider for conversational tasks.

Changes
Update documentation with Hyperfusion links and information
Base URL: https://api.hyperfusion.io
Route: /v1/chat/completions (OpenAI compatible)

[SBrandeis]

Hey there!
Thank you for your interest in becoming an Inference Provider and for the excellent work you've put into this integration! We really appreciate the effort.

However, we're currently in a consolidation phase focusing on growing usage of Inference Providers via new features and integrations rather than expanding to new partners. This means we've temporarily paused onboarding new providers while we work on these improvements.

We're not able to provide a specific timeline for when we'll resume new provider onboarding, but we'd love to revisit this integration in the future.
Thanks again for your contribution and understanding!