Provider passthrough

Other provider endpoints, forwarded as they are.

📄️Forward a GET to the provider

Forwards any other `GET` under `/v1/` to your provider as it is, for example listing models. The gateway key is checked first. Only embeddings are accounted for tokens and cost.

📄️Forward a POST to the provider

Forwards any other `POST` under `/v1/` to your provider as it is, for example embeddings. The gateway key is checked first. Only embeddings are accounted for tokens and cost.