Add support for /embeddings endpoint via Vercel AI Gateway.
Closes#19658
Changes:
- Add VercelAIGatewayEmbeddingConfig in litellm/llms/vercel_ai_gateway/embedding/
- Register provider in utils.py and main.py
- Add unit tests for embedding transformation
- Update documentation with embeddings examples
Usage:
```python
from litellm import embedding
response = embedding(
model="vercel_ai_gateway/openai/text-embedding-3-small",
input="Hello world",
api_key="your-api-key"
)
```
* Fix vercel_ai_gateway entry for glm-4.6
* Fix: add unit test for vercel_ai_gateway/zai/glm-4.6
* Fix:
Add fix for unit test on vercel_ai_gateway/zai/glm-4.6
* Remove print statements in test_vercel_ai_gateway_glm46_cost_math