Verb-noun-ify Nonce API (#7925)

* Verb-noun-ify Nonce API

* Unify instruction naming with API naming

The more verbose nonce_account/NonceAccount was chosen for clarity
that these instructions work on a unique species of system account

sdk/src/transaction.rs

@@ -110,8 +110,10 @@ impl Transaction {
         nonce_authority_pubkey: &Pubkey,
         nonce_hash: Hash,
     ) -> Self {
-        let nonce_ix =
-            system_instruction::nonce_advance(&nonce_account_pubkey, &nonce_authority_pubkey);
+        let nonce_ix = system_instruction::advance_nonce_account(
+            &nonce_account_pubkey,
+            &nonce_authority_pubkey,
+        );
         instructions.insert(0, nonce_ix);
         Self::new_signed_with_payer(instructions, payer, signing_keypairs, nonce_hash)
     }