Reuse function tool instance and improve e2b interpreter tool (#127)

.changeset/nervous-rats-lick.md

helpers/tools.ts

templates/components/engines/python/agent/tools/__init__.py

...ates/components/engines/python/agent/tools/interpreter.py

...s/components/engines/python/agent/tools/openapi_action.py

templates/components/engines/python/agent/tools/weather.py