Cli: deploy programs via TPU (#13090)

* Deploy: send write transactions to leader tpu

* Less apparent stalling during confirmation

* Add EpochInfo mock

* Only get cluster nodes once

* Send deploy writes to next leader

cli/src/lib.rs

@@ -26,6 +26,7 @@ pub mod cluster_query;
 pub mod feature;
 pub mod inflation;
 pub mod nonce;
+pub mod send_tpu;
 pub mod spend_utils;
 pub mod stake;
 pub mod test_utils;