monty-go: Pure-Go wrapper for Pydantic's Monty Python Interpreter

monty-go provides a pure-Go wrapper that runs Pydantic’s Monty Python interpreter compiled to a 2.9 MB WebAssembly binary via wazero, allowing Go agents to execute sandboxed Python code with sub-millisecond startup. The runtime pauses on declared external functions, letting Go callbacks handle calls such as HTTP requests, while limits on duration, memory, allocations, and recursion prevent runaway scripts.