Add the following LLM support

• Anthropic Claude
• Amazon Bedrock
• Mistral AI

Development Steps

1. See https://github.com/hmasdev/autogen-werewolf/blob/main/README.md#development
2. Select a new LLM which you can implement: spiritualist, twins and madman
3. develop
   • Update pyproject.toml: update the extra of pyautogen and add langchain-xxxx etc...;
   • Update werewolf/const.py: add new model names to MODEL_SERVICE_MAP, add a new service to EChatService, and add a new environment variable name of the service;
   • Update werewolf/chat_models.py: update _service2cls
   • implemented test code for a-c.
4. pytest/flake8/mypy
5. update ./README.md.j2
6. commit/push
7. pull request

https://microsoft.github.io/autogen/docs/topics/non-openai-models/about-using-nonopenai-models helps the above works