feat: support multi agent for ts (#300)

.changeset/yellow-jokes-protect.md

e2e/multiagent_template.spec.ts

helpers/typescript.ts

questions.ts

...mponents/multiagent/typescript/express/chat.controller.ts

templates/components/multiagent/typescript/nextjs/route.ts

...lates/components/multiagent/typescript/workflow/agents.ts

...ates/components/multiagent/typescript/workflow/factory.ts

...components/multiagent/typescript/workflow/single-agent.ts

...lates/components/multiagent/typescript/workflow/stream.ts

templates/components/multiagent/typescript/workflow/type.ts

templates/components/settings/typescript/settings.ts

templates/types/streaming/express/package.json

...es/types/streaming/nextjs/app/api/chat/engine/settings.ts

templates/types/streaming/nextjs/package.json