Add MEV scraping (#320)

Author: KaloyanTanev

compose-mev.yml

@@ -14,6 +14,7 @@ services:
     image: ghcr.io/commit-boost/pbs:${MEV_COMMITBOOST_VERSION:-v0.9.6}
     environment:
       - CB_CONFIG=/etc/commit-boost/config.toml
+      - CB_METRICS_PORT=10001
     volumes:
       - ./commit-boost/config.toml:/etc/commit-boost/config.toml:ro
     labels: