fix: add timeout to WASM plugin verification to prevent indefinite blocking

[mmatur]

Summary

• Add a runWithTimeout helper that wraps any function with a hard timeout via goroutine + select, since wazero does not respect
  context.Context deadlines during module instantiation
• Wrap checkWasmMiddleware with a 10s timeout (aligned with the existing Yaegi verification timeout), preventing piceus from hanging
  indefinitely when a WASM plugin makes blocking network calls during initialization
• Pass context.Context into checkWasmMiddleware for future-proofing, even though wazero currently ignores it

Fixes #146