* cmd/puppeth: integrate blockscout

* cmd/puppeth: expose debug namespace for blockscout

* cmd/puppeth: fix dbdir

* cmd/puppeth: run explorer in archive mode

* cmd/puppeth: ensure node is synced

* cmd/puppeth: fix explorer docker alignment + drop unneeded exec

* cmd/puppeth: polish up config saving and reloading

* cmd/puppeth: check both web and p2p port for explorer service