* Refactor Hugging Face service settings and completion request methods for consistency
* Add Llama model support for embeddings and chat completions
* Refactor Llama request classes to improve secret settings handling
* Refactor DeltaParser in LlamaStreamingProcessor to improve argument handling
* Enhance Llama streaming processing by adding support for nullable object arrays
* [CI] Auto commit changes from spotless
* Fix error messages in LlamaActionCreator
* [CI] Auto commit changes from spotless
* Add detailed Javadoc comments to Llama classes for improved documentation
* Enhance LlamaChatCompletionResponseHandler to support mid-stream error handling and improve error response parsing
* Add Javadoc comments to Llama classes for improved documentation and clarity
* Fix checkstyle
* Update LlamaEmbeddingsRequest to use mediaTypeWithoutParameters for content type header
* Add unit tests for LlamaActionCreator and related models
* Add unit tests for LlamaChatCompletionServiceSettings to validate configuration parsing and serialization
* Add unit tests for LlamaEmbeddingsServiceSettings to validate configuration parsing and serialization
* Add unit tests for LlamaEmbeddingsServiceSettings to validate various configuration scenarios
* Add unit tests for LlamaChatCompletionResponseHandler to validate error response handling
* Refactor Llama embedding and chat completion tests for consistency and clarity
* Add unit tests for LlamaChatCompletionRequestEntity to validate message serialization
* Add unit tests for LlamaEmbeddingsRequest to validate request creation and truncation behavior
* Add unit tests for LlamaEmbeddingsRequestEntity to validate XContent serialization
* Add unit tests for LlamaErrorResponse to validate error handling from HTTP responses
* Add unit tests for LlamaChatCompletionServiceSettings to validate configuration parsing and serialization
* Add tests for LlamaService request configuration validation and error handling
* Fix error message formatting in LlamaServiceTests for better localization support
* Refactor Llama model classes to implement accept method for action visitors
* Hide Llama service from configuration API to enhance security and reduce exposure
* Refactor Llama model classes to remove modelId and update embedding request handling
* Refactor Llama request classes to use pattern matching for secret settings
* Update embeddings handler to use HuggingFace response entity
* Refactor Mistral model classes to remove modelId and update rate limit hashing
* Refactor Mistral action classes to remove taskSettings parameter and streamline action creation
* Refactor Llama and Mistral models to remove taskSettings parameter and simplify model instantiation
* Refactor Llama service tests to use Model instead of CustomModel and update similarity measure to DOT_PRODUCT
* Remove unused tests and imports from LlamaServiceTests
* Add chunking settings support to Llama embeddings model tests
* Add changelog
* Add support for version checks in Llama settings and define new transport version
* Refactor Llama model assertions and remove unused version support methods
* Refactor Llama service constructors to include ClusterService and improve error message handling
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Co-authored-by: elasticsearchmachine <infra-root+elasticsearchmachine@elastic.co>
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