Add TpuClient support to bench-tps (#24227)

* Add fallible send methods, and rpc_client helper

* Add helper to return RpcClient url

* Implement BenchTpsClient for TpuClient

* Add cli rpc and identity handling

* Handle different kinds of clients in main, use TpuClient

* Add tpu_client integration test

Cargo.lock

@@ -4436,6 +4436,8 @@ dependencies = [
  "serde_json",
  "serde_yaml",
  "serial_test",
+ "solana-clap-utils",
+ "solana-cli-config",
  "solana-client",
  "solana-core",
  "solana-faucet",
@@ -4450,6 +4452,7 @@ dependencies = [
  "solana-runtime",
  "solana-sdk",
  "solana-streamer",
+ "solana-test-validator",
  "solana-version",
  "thiserror",
 ]