[Feature] Support SSE(Server-Sent Event)

[yinzhidong]

Search before asking

• [ ] I had searched in the issues and found no similar issues.

Feature Request

In some scenarios, we hope that Laf Client can better receive various server-side push message events

1.Request log client for real-time streaming display 2.Alerts and notifications for certain charges or traffic

Below are the SSE documentation and examples based on NestJS

NestJS SSE Sample SSE

Are you willing to submit PR?

• [ ] Yes I am willing to submit a PR!