Implement gloas proposer preference vc duty (#9208)

Allow for the vc to submit its proposer preferences to the network


  


Co-Authored-By: Eitan Seri-Levi <eserilev@ucsc.edu>

Co-Authored-By: Jimmy Chen <jchen.tc@gmail.com>

beacon_node/beacon_chain/src/proposer_preferences_verification/tests.rs

@@ -127,11 +127,11 @@ fn make_signed_preferences(
 ) -> Arc<SignedProposerPreferences> {
     Arc::new(SignedProposerPreferences {
         message: ProposerPreferences {
+            dependent_root: Hash256::ZERO,
             proposal_slot,
             validator_index,
             fee_recipient: Address::ZERO,
             gas_limit: 30_000_000,
-            ..ProposerPreferences::default()
         },
         signature: Signature::empty(),
     })
@@ -231,11 +231,10 @@ fn correct_proposer_bad_signature() {
         result,
         Err(ProposerPreferencesError::BadSignature)
     ));
-    assert!(!ctx.preferences_cache.get_seen_validator(
-        &slot,
-        types::Hash256::ZERO,
-        actual_proposer
-    ));
+    assert!(
+        !ctx.preferences_cache
+            .get_seen_validator(&slot, Hash256::ZERO, actual_proposer)
+    );
     assert!(ctx.preferences_cache.get_preferences(&slot).is_none());
 }