Adding HTTP streaming support

[Gyurmatag]

So it would be nice that it would add also not just /sse but /mcp for the more modern streaming response.

[ruifigueira]

Hey @Gyurmatag !

We already support /sse, you can check our example in https://github.com/cloudflare/playwright-mcp/blob/main/cloudflare/example/src/index.ts .