new: chat result in stream

• New: When using CreateChatCompletionRequest and CreateCompletionRequest, if the stream mode is set to 'true', an OutputStream can be provided to receive the returned stream data.

Calculate Embeddings

• Optimize: CreateEmbeddingsRequest now retrieves embeddings as double instead of float.
• New: Add Distance.class. Calculate cosine distance for embeddings.

Optimize: Failure message

• Optimize: Distinguish between sending failure and parsing failure in GptRequest.class

Optimize: Add GptModel list

Optimize: Add GptModel.class list some available models for request; You can choose models instead of type the model name

V1.3: - New: chat apis

New: chat apis
New: audio apis