chore: move sync to p2p crate (#8389)

crates/net/p2p/src/lib.rs

@@ -38,6 +38,9 @@ pub mod error;
 /// Priority enum for BlockHeader and BlockBody requests
 pub mod priority;
 
+/// Syncing related traits.
+pub mod sync;
+
 /// Common test helpers for mocking out Consensus, Downloaders and Header Clients.
 #[cfg(any(test, feature = "test-utils"))]
 pub mod test_utils;