feat: complete rewrite

transactions/transaction-executor.interface.ts

@@ -0,0 +1,8 @@
+import { BlockhashWithExpiryBlockHeight, Transaction, VersionedTransaction } from '@solana/web3.js';
+
+export interface TransactionExecutor {
+  executeAndConfirm(
+    transaction: Transaction | VersionedTransaction,
+    latestBlockhash: BlockhashWithExpiryBlockHeight,
+  ): Promise<{ confirmed: boolean; signature: string }>;
+}