[inference provider] Add charity-engine as an inference provider

[tristanolive]

CharityEngine is "the crowdsourced cloud" - a high-throughput compute service running on a global network of volunteered devices.

Our distributed platform provides an ecosystem of compute, storage, and web crawling capabilities and this integration makes it available for running batch inference on HF.

[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!

[GRMatt]

@SBrandeis , two thoughts/suggestions --

1. If you're not onboarding new partners, could you kindly note this at How to be registered as an inference provider on the Hub, or other obvious place? (*It's a non-trivial amount of work to set up these integrations.)

2. FWIW, there are a decent number of currently active providers, but there are considerable swaths of the universe of models which are not covered by any of them; at Charity Engine we'd planned on offering models not provided by others. Also, our community-powered (distributed) model will enable us to provide quite low-cost services. So I hope you'll keep us in mind when you get around to re-opening the program.