Implement the Ollama POST /api/embed endpoint for generating vector
embeddings from text input.
- Add EmbedInput, EmbedRequest, EmbedResponse types in src/types/embed.rs
- Add OllamaClient::embed() async method in src/lib.rs
- Register embed module in src/types/mod.rs
- Add usage example in examples/embed.rs
- Update README with embed endpoint documentation