feat: use llamacloud pipeline in TS (#236)

.changeset/violet-islands-collect.md

helpers/env-variables.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

templates/components/llamaindex/typescript/streaming/file.ts

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

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

...lates/components/vectordbs/typescript/llamacloud/index.ts

...components/vectordbs/typescript/llamacloud/queryFilter.ts

templates/types/streaming/express/package.json

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

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

.../streaming/nextjs/app/api/chat/config/llamacloud/route.ts

...lates/types/streaming/nextjs/app/api/chat/upload/route.ts

templates/types/streaming/nextjs/package.json