Introducing deploy cli

LangChain has released a new `deploy` command set within the `langgraph-cli` package, enabling developers to deploy and manage LangGraph agents to LangSmith Deployment directly from the command line. The `langgraph deploy` command builds a Docker image and automatically provisions infrastructure including Postgres and Redis, making it easy to integrate into CI/CD pipelines like GitHub Actions or GitLab CI. Additional commands allow listing, logging, and deleting deployments. New deep agent and simple agent templates are also available via `langgraph new`.