BRP render app in CI

[Zeophlite]

Split out from #25892 (comment)

Add CI to check for BRP on render app to prevent regression

let render_client = BrpClient::new(DEFAULT_ADDR.to_string(), DEFAULT_RENDER_PORT);

wait_for_something(render_client);

Ideally do something useful

[alice-i-cecile]

I think that "dump the schedule of both the main and render world" is a nice "do something useful" task to test :)

[mockersf]

I think that "dump the schedule of both the main and render world" is a nice "do something useful" task to test :)

Not really in an end to end test... You want to avoid testing technical details as much as possible in those, you test app/games behaviour