feat: Add multi-agent financial report use case for TS (#394)

.changeset/little-jars-vanish.md

helpers/typescript.ts

questions/simple.ts

templates/components/agents/typescript/blog/agents.ts

templates/components/agents/typescript/blog/factory.ts

templates/components/agents/typescript/blog/tools.ts

...s/components/agents/typescript/financial_report/agents.ts

.../components/agents/typescript/financial_report/factory.ts

...es/components/agents/typescript/financial_report/tools.ts

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

templates/types/streaming/express/package.json

templates/types/streaming/nextjs/package.json