RPC simulateTransaction endpoint now returns program log output (#10432)

runtime/src/lib.rs

@@ -11,6 +11,7 @@ pub mod epoch_stakes;
 pub mod genesis_utils;
 mod legacy_system_instruction_processor0;
 pub mod loader_utils;
+pub mod log_collector;
 pub mod message_processor;
 mod native_loader;
 pub mod nonce_utils;