Track votes from gossip for optimistic confirmation (#11209)

* Add check in cluster_info_vote_listenere to see if optimstic conf was achieved
Add OptimisticConfirmationVerifier

* More fixes

* Fix merge conflicts

* Remove gossip notificatin

* Add dashboards

* Fix rebase

* Count switch votes as well toward optimistic conf

* rename

Co-authored-by: Carl <carl@solana.com>

programs/vote/src/vote_transaction.rs

@@ -14,13 +14,23 @@ pub fn new_vote_transaction(
     node_keypair: &Keypair,
     vote_keypair: &Keypair,
     authorized_voter_keypair: &Keypair,
+    switch_proof_hash: Option<Hash>,
 ) -> Transaction {
     let votes = Vote::new(slots, bank_hash);
-    let vote_ix = vote_instruction::vote(
-        &vote_keypair.pubkey(),
-        &authorized_voter_keypair.pubkey(),
-        votes,
-    );
+    let vote_ix = if let Some(switch_proof_hash) = switch_proof_hash {
+        vote_instruction::vote_switch(
+            &vote_keypair.pubkey(),
+            &authorized_voter_keypair.pubkey(),
+            votes,
+            switch_proof_hash,
+        )
+    } else {
+        vote_instruction::vote(
+            &vote_keypair.pubkey(),
+            &authorized_voter_keypair.pubkey(),
+            votes,
+        )
+    };
 
     let mut vote_tx = Transaction::new_with_payer(&[vote_ix], Some(&node_keypair.pubkey()));