List supported models using Bedrock Client

Migrate to Bedrock Converse APIs to support newer models

Merge pull request #1 from leewc/readme

Add readme

Fix bug with Claude3Engine system prompt and add test coverage

Test coverage report using Coverage.py

Makefile build target without tests

Legacy completions api

Bedrock engine for Claude 3 models

Unit test for Bedrock streaming

Unit tests for Bedrock

Mark finish_reason as optional

List models and model selection for Bedrock

Bedrock support for image generation

Support for image generation