feat: display files from llamacloud (#153)

.changeset/happy-hairs-kick.md

helpers/index.ts

...ates/components/llamaindex/typescript/documents/helper.ts

...es/components/llamaindex/typescript/documents/pipeline.ts

...ates/components/llamaindex/typescript/documents/upload.ts

...ates/components/llamaindex/typescript/streaming/events.ts

...tes/components/llamaindex/typescript/streaming/service.ts

templates/components/vectordbs/python/llamacloud/generate.py

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

...es/components/vectordbs/typescript/llamacloud/generate.ts

templates/types/streaming/express/package.json

...reaming/express/src/controllers/chat-upload.controller.ts

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

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

...ypes/streaming/fastapi/app/api/routers/vercel_response.py

templates/types/streaming/fastapi/app/api/services/file.py

...s/types/streaming/fastapi/app/api/services/llama_cloud.py

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

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

templates/types/streaming/fastapi/main.py