✨ Added Anthropic and Groq support

[devjpt23]

Once this PR is merged, Anthropic and Groq models can be accessed via the IDE by changing the model in provider-settings.yaml. Below shows the way the file needs to be changed.

environment:
  ALWAYS_APPLIED_KEY: "envvar to be set regardless of which model is active"

# This is a collection of model configurations that may be used.  The `&active`
# anchor is used to reference the model to the active node below.  The extension will
# use the active node for configuration the kai-rpc-server.
models:
  ChatAnthropic:
    environment:
      ANTHROPIC_API_KEY: "YOUR_ANTHROPIC_API_KEY"

    provider: "ChatAnthropic"
    args:
      model: "claude-3-5-sonnet-20241022"

  
  ChatGroq: &active
    environment:
      GROQ_API_KEY: "YOUR_GROQ_API_KEY

    provider: "ChatGroq"
    args:
      model: "mixtral-8x7b-32768"

[jwmatthews]

@devjpt23 we will likely want to bring in #675 first and then your PR after it’s ready and tested.

It would be worth you taking a look at #675 and being familiar, we think the continuation support may be the fix to problems we’ve seen working with Claude and other models via Amazon bedrock in past.