EVM node/Rollup node: Opentelemetry traces for Resto server
What
This MR adds opentelemetry traces in the Resto server callbacks for the EVM node and the Rollup node which follow the convention of https://opentelemetry.io/docs/specs/semconv/http/http-spans/#http-server-span
Why
This allows to better profile (at a lower level) RPC calls.
How
By using information from the Resto request and responses.