Sync Re-Write (#663)

* Apply clippy lints to beacon node

* Remove unnecessary logging and correct formatting

* Initial bones of load-balanced range-sync

* Port bump meshsup tests

* Further structure and network handling logic added

* Basic structure, ignoring error handling

* Correct max peers delay bug

* Clean up and re-write message processor and sync manager

* Restructure directory, correct type issues

* Fix compiler issues

* Completed first testing of new sync

* Correct merge issues

* Clean up warnings

* Push attestation processed log down to dbg

* Correct math error, downgraded logs

* Add RPC error handling and improved syncing code

* Add libp2p stream error handling and dropping of invalid peers

* Lower logs

* Add discovery tweak

* Correct libp2p service locking

* Handles peer disconnects for sync

* Add logs downgrade discovery log

* Less fork choice (#679)

* Try merge in change to reduce fork choice calls

* Remove fork choice from process block

* Minor log fix

* Check successes > 0

* Fix failing beacon chain tests

* Fix re-org warnings

* Fix mistake in prev commit

* Range sync refactor

- Introduces `ChainCollection`
- Correct Disconnect node handling
- Removes duplicate code

* Various bug fixes

* Remove unnecessary logs

* Maintain syncing state in the transition from finalied to head

* Improved disconnect handling

* Adds forwards block interator

* Notifies lighthouse on stream timeouts

* Apply new gossipsub updates

beacon_node/src/config.rs

@@ -22,7 +22,7 @@ type Config = (ClientConfig, Eth2Config, Logger);
 
 /// Gets the fully-initialized global client and eth2 configuration objects.
 ///
-/// The top-level `clap` arguments should be provied as `cli_args`.
+/// The top-level `clap` arguments should be provided as `cli_args`.
 ///
 /// The output of this function depends primarily upon the given `cli_args`, however it's behaviour
 /// may be influenced by other external services like the contents of the file system or the