wallet cli: single transaction lookup

Mostly used for testing

packages/taler-wallet-cli/src/index.ts

@@ -419,6 +419,25 @@ transactionsCli
     });
   });
 
+transactionsCli
+  .subcommand("lookup", "lookup", {
+    help: "Look up a single transaction based on the transaction identifier.",
+  })
+  .requiredArgument("transactionId", clk.STRING, {
+    help: "Identifier of the transaction to delete",
+  })
+  .action(async (args) => {
+    await withWallet(args, async (wallet) => {
+      const tx = await wallet.client.call(
+        WalletApiOperation.GetTransactionById,
+        {
+          transactionId: args.lookup.transactionId,
+        },
+      );
+      console.log(j2s(tx));
+    });
+  });
+
 transactionsCli
   .subcommand("abortTransaction", "abort", {
     help: "Abort a transaction.",