feat: Add support for llamahub tools (#517)

create-app.ts

e2e/utils.ts

helpers/python.ts

helpers/tools.ts

helpers/types.ts

index.ts

questions.ts

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

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

templates/components/engines/python/chat/__init__.py

templates/components/vectordbs/python/mongo/index.py

templates/components/vectordbs/python/none/index.py

templates/components/vectordbs/python/pg/index.py

templates/types/simple/fastapi/app/api/routers/chat.py

templates/types/simple/fastapi/app/engine/__init__.py

templates/types/simple/fastapi/app/engine/index.py

templates/types/simple/fastapi/pyproject.toml

templates/types/streaming/fastapi/app/api/routers/chat.py

templates/types/streaming/fastapi/app/engine/__init__.py

templates/types/streaming/fastapi/app/engine/index.py