p2p,eth: add dial, eth handshakes and traffic metrics

[huyngopt1994]

Referenced by ethereum/go-ethereum#27621 and ethereum/go-ethereum#27008

Description
This PR adds metrics for

• The p2p dialer, which gives us visibility into the quality of the dial candidates given to us by our discovery methods ( Healthy of dial connections for showing failure related to multitude of reasons: wrong chain, too many peers, etc.)
• Trafic metrics for discV4 and discV5 related to network usage.

Added Metrics

• discover/bucket/{index}/count - the number of nodes in bucket index
• eth/protocols/eth/{ingress|egress}/handshake/error/peer - unexpected peer behavior
• eth/protocols/eth/{ingress|egress}/handshake/error/timeout - handshake timeout
• eth/protocols/eth/{ingress|egress}/handshake/error/network - wrong network id
• eth/protocols/eth/{ingress|egress}/handshake/error/version - wrong protocol version
• eth/protocols/eth/{ingress|egress}/handshake/error/genesis - wrong genesis
• eth/protocols/eth/{ingress|egress}/handshake/error/forkid - wrong forkid
• eth/protocols/snap/{ingress|egress}/registration/error - error registering snap protocol (usually snap, but no eth)
• p2p/dials/success - the total number of dials that result in a peer being added to the peerset
• p2p/dials/error/connection - unable to initiate TCP connection to target
• p2p/dials/error/saturated - local client is already connected to its maximum number of peers
• p2p/dials/error/known - dialing an already connected peer
• p2p/dials/error/self - dialing the local node's id
• p2p/dials/error/useless - dialing a peer that doesn't share an capabilities with the local node
• p2p/dials/error/id/unexpected - dialed peer repsoned with different id than expected
• p2p/dials/error/rlpx/enc - error negotiating the rlpx encryption during dial
• p2p/dials/error/rlpx/proto - error during rlpx protocol handshake`

discv4 only (Example)