- use libevm/metrics instead of subnet-evm/metrics
- file kept and refactored `metrics/prometheus/prometheus.go` with the `Gatherer` implementation we use
- file kept and refactored `metrics/prometheus/prometheus_test.go`
- new file `metrics/prometheus/interfaces.go` added for refactoring
- geth global variable `metrics.Enabled` is set to true both in libevm and in `plugin/evm.VM.initializeMetrics`
Signed-off-by: Quentin McGaw <[email protected]>
Co-authored-by: Arran Schlosberg <[email protected]>