Support LightClientFinalityUpdate and LightClientOptimisticUpdate rpcs (#3849)

* add light client optimistic and finality update rpc

* Arc the updates in the response

* add conditional advertisement for both LightClientOptimisticUpdate and LightClientFinalityUpdate

* alter display for inboundrequest light client optimistic and finality updates

* remove LightClientOptimistic/FinalityReuest struct and some minor fixes

* rebase

* failing rpc_test for LightClientBootstrap and beginning of MockLib2pLightClient

* minor change

* added MockRPCHandler by importing everything except OutboundRequest. Need to implement the ConnectionHandler trait now should be copy pastable

* almost there but ran into issue where needed to implement BaseOutboundRequest.

* failing but running with a light client service of sorts

* small test change

* changed Protocol::LightClientBootstrap response limit

* deleted some stuff from ConnectionHandler Implementation for the mock light client if you need to make something with multiple requests work maybe check here

* deleted purging expired inbound/outbound streams code

* deleted drive inbound streams that need to be processed

* removed unused imports

* made things private again

* deleted inject_fully_negotiated_inbound

* made more things private again

* more

* turned the logger off in the test

* added failing test for new rpc

* add rate limit for new rpcs

* change InboundUpgrade function to use new rpcs. fmt. add test for LightClientFinalityUpdate

* rebasing fix

* add LightClientUpdate to handle_rpc functions

* added context bytes

* fmt

* use correct unsed_tcp4_port function

* fix for recent config changes and adding context_bytes for the light client protocols

* fix clippy complaint

* Merge branch 'unstable' into lc-reqresp

# Conflicts:
#	beacon_node/beacon_processor/src/lib.rs
#	beacon_node/lighthouse_network/src/peer_manager/mod.rs
#	beacon_node/lighthouse_network/src/rpc/codec/ssz_snappy.rs
#	beacon_node/lighthouse_network/src/rpc/config.rs
#	beacon_node/lighthouse_network/src/rpc/methods.rs
#	beacon_node/lighthouse_network/src/rpc/mod.rs
#	beacon_node/lighthouse_network/src/rpc/outbound.rs
#	beacon_node/lighthouse_network/src/rpc/protocol.rs
#	beacon_node/lighthouse_network/src/rpc/rate_limiter.rs
#	beacon_node/lighthouse_network/src/rpc/self_limiter.rs
#	beacon_node/lighthouse_network/src/service/api_types.rs
#	beacon_node/lighthouse_network/tests/common/mod.rs
#	beacon_node/lighthouse_network/tests/rpc_tests.rs
#	beacon_node/network/src/network_beacon_processor/rpc_methods.rs
#	beacon_node/network/src/router.rs

* Error handling updates and various cleanups.

* Moar minor clean ups.

* Do not ban peer for rate limiting light client requests

* Merge branch 'unstable' into lc-reqresp. Also removed the mock light client tests to make it compile (See #4940).

# Conflicts:
#	beacon_node/lighthouse_network/src/rpc/codec/ssz_snappy.rs
#	beacon_node/lighthouse_network/src/rpc/methods.rs
#	beacon_node/lighthouse_network/src/rpc/mod.rs
#	beacon_node/lighthouse_network/src/rpc/protocol.rs
#	beacon_node/lighthouse_network/src/service/api_types.rs
#	beacon_node/lighthouse_network/tests/common/mod.rs
#	beacon_node/network/src/network_beacon_processor/rpc_methods.rs
#	beacon_node/network/src/router.rs
#	consensus/types/src/light_client_bootstrap.rs
#	consensus/types/src/light_client_finality_update.rs
#	consensus/types/src/light_client_optimistic_update.rs

* Remove unnecessary changes

* Add missing light client queue handling.

* Merge branch 'unstable' into lc-reqresp

* Merge branch 'unstable' into lc-reqresp

# Conflicts:
#	beacon_node/lighthouse_network/src/rpc/codec/ssz_snappy.rs
#	beacon_node/lighthouse_network/src/service/api_types.rs
#	consensus/types/src/light_client_finality_update.rs
#	consensus/types/src/light_client_optimistic_update.rs

* Add context bytes for light client RPC responses.

* Add RPC limits for light client object.

* Fix lint

* Fix incorrect light client max size computation.

* Merge branch 'unstable' into lc-reqresp

# Conflicts:
#	beacon_node/lighthouse_network/src/rpc/codec/ssz_snappy.rs
#	beacon_node/lighthouse_network/src/rpc/protocol.rs
#	beacon_node/lighthouse_network/src/service/api_types.rs

* Remove unwanted local changes.

* Merge branch 'unstable' into lc-reqresp

* Replace `unimplemented` electra code path with deneb values.

beacon_node/lighthouse_network/src/peer_manager/mod.rs

@@ -553,7 +553,11 @@ impl<E: EthSpec> PeerManager<E> {
                     Protocol::BlocksByRange => PeerAction::MidToleranceError,
                     Protocol::BlocksByRoot => PeerAction::MidToleranceError,
                     Protocol::BlobsByRange => PeerAction::MidToleranceError,
-                    Protocol::LightClientBootstrap => PeerAction::LowToleranceError,
+                    // Lighthouse does not currently make light client requests; therefore, this
+                    // is an unexpected scenario. We do not ban the peer for rate limiting.
+                    Protocol::LightClientBootstrap => return,
+                    Protocol::LightClientOptimisticUpdate => return,
+                    Protocol::LightClientFinalityUpdate => return,
                     Protocol::BlobsByRoot => PeerAction::MidToleranceError,
                     Protocol::Goodbye => PeerAction::LowToleranceError,
                     Protocol::MetaData => PeerAction::LowToleranceError,
@@ -575,6 +579,8 @@ impl<E: EthSpec> PeerManager<E> {
                     Protocol::BlobsByRoot => return,
                     Protocol::Goodbye => return,
                     Protocol::LightClientBootstrap => return,
+                    Protocol::LightClientOptimisticUpdate => return,
+                    Protocol::LightClientFinalityUpdate => return,
                     Protocol::MetaData => PeerAction::Fatal,
                     Protocol::Status => PeerAction::Fatal,
                 }
@@ -592,6 +598,8 @@ impl<E: EthSpec> PeerManager<E> {
                     Protocol::BlobsByRange => PeerAction::MidToleranceError,
                     Protocol::BlobsByRoot => PeerAction::MidToleranceError,
                     Protocol::LightClientBootstrap => return,
+                    Protocol::LightClientOptimisticUpdate => return,
+                    Protocol::LightClientFinalityUpdate => return,
                     Protocol::Goodbye => return,
                     Protocol::MetaData => return,
                     Protocol::Status => return,