feat: add EmpirioLabs provider

[Adam-Dalloul]

Description: (required)

• Added EmpirioLabs to the global provider registry (src/globals.ts, src/providers/index.ts)
• Implemented an OpenAI-compatible provider under src/providers/empiriolabs/ that reuses the open-ai-base helpers, mirroring the AI Badgr provider (feat(provider): add AI Badgr OpenAI-compatible provider #1472)
• Provider API config sets the base URL https://api.empiriolabs.ai/v1, Bearer auth headers, and the chat completions and embeddings endpoints
• Added chat completion, streaming, and embeddings support
• Included a usage notebook demonstrating Portkey + EmpirioLabs

EmpirioLabs is an OpenAI-compatible gateway that serves frontier chat and embedding models and exposes a /v1/models catalog for model discovery. Docs: https://docs.empiriolabs.ai

Tests Run/Test cases added: (required)

• Verified the project builds with npm run build and the provider compiles into the bundle
• Verified the provider resolves from the registry with the correct base URL, auth header, and chat and embeddings endpoints
• Validated streaming chunk transformation logic

Type of Change:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactoring (no functional changes)

[Adam-Dalloul]

Hi! This adds EmpirioLabs as a provider (chat, embeddings, image, speech, transcription). It is ready for review whenever you have a chance, CI is green, and I am happy to address any feedback. Thank you!

[Adam-Dalloul]

Hi @VisargD, this provider integration is ready for review whenever you have a chance. Happy to address any feedback. Thank you!

[Adam-Dalloul]

Just checking in on this one. It is ready for review whenever a maintainer has a chance, and I can turn around any requested changes quickly. Thanks!