chore: add dashboard for liteprotocoltester runs

[NagyZoltanPeter]

Background

As closing the light protcol tooling we shall add grafana dashboard for liteprotocoltester to be able to monitor the performance of the tests.

Details

As it is already possible to run liteprotocoltester on waku-simulatior or on any real fleet either on TWN.
Staticsitcs are also collected but only printed into the log.
We need to introduce corresponding metrics and prepare a dashboard for them.

Acceptance criteria

Run liteprotocoltester on TWN or on simulator, check monitoring dashboard and take screenshots of it.