Activate peer scoring (#1284)

* Initial score structure

* Peer manager update

* Updates to dialing

* Correct tests

* Correct typos and remove unused function

* Integrate scoring into the network crate

* Clean warnings

* Formatting

* Shift core functionality into the behaviour

* Temp commit

* Shift disconnections into the behaviour

* Temp commit

* Update libp2p and gossipsub

* Remove gossipsub lru cache

* Correct merge conflicts

* Modify handler and correct tests

* Update enr network globals on socket update

* Apply clippy lints

* Add new prysm fingerprint

* More clippy fixes

beacon_node/eth2_libp2p/src/rpc/codec/ssz.rs

@@ -145,7 +145,7 @@ impl<TSpec: EthSpec> Decoder for SSZInboundCodec<TSpec> {
                 },
                 Protocol::MetaData => match self.protocol.version {
                     Version::V1 => {
-                        if packet.len() > 0 {
+                        if !packet.is_empty() {
                             Err(RPCError::InvalidData)
                         } else {
                             Ok(Some(RPCRequest::MetaData(PhantomData)))