[FEAT] Agent SDK integrations

[abelanger5]

Is your feature request related to a problem? Please describe.

We'd like to improve support for Hatchet when used with agent tooling like OpenCode Agent SDK, Claude Agent SDK, OpenAI Agents SDK, and Pydantic AI.

Some of the pre-existing work can be found here:

• Add Python support for Claude/OpenAI MCP server tools #3422
• Add Typescript support for Claude/OpenAI MCP server tools #3443