Browser and code interpreter toolkits

[3coins]

This PR adds browser and code interpreter toolkits based on the Amazon Bedrock AgentCore API.

Browser Toolkit

• Provides tools for automated web browsing and interaction
• Features thread-aware browser session management
• Capabilities include URL navigation, clicking elements, text extraction

  from langchain_aws.tools import create_browser_toolkit

  # Create browser toolkit
  toolkit, browser_tools = create_browser_toolkit(region="us-west-2")

  # Available tools
  print([tool.name for tool in browser_tools])
  # ['navigate_browser', 'click_element', 'extract_text', 'extract_hyperlinks', ...]

Code Interpreter Toolkit

• Enables secure code execution in managed AWS environments
• Thread-aware code interpreter session management
• Capabilities include Python code execution, shell commands, file operations

  from langchain_aws.tools import create_code_interpreter_toolkit

  # Create code interpreter toolkit
  toolkit, code_tools = await create_code_interpreter_toolkit(region="us-west-2")

  # Available tools
  print([tool.name for tool in code_tools])
  # ['execute_code', 'execute_command', 'read_files', 'list_files', 'delete_files', ...]

[3coins]

@michaelnchin
Thanks for reviewing, made the suggested changes.

[michaelnchin]

LGTM!