Adds code

FinTSTest/Program.cs

@@ -0,0 +1,40 @@
+// See https://aka.ms/new-console-template for more information
+
+using libfintx.FinTS;
+using libfintx.FinTS.Data;
+using libfintx.Swift;
+
+FinTsClient client = new FinTsClient(
+    new ConnectionDetails()
+    {
+        Url = Environment.GetEnvironmentVariable("FINTS_URL"),
+        UserId = Environment.GetEnvironmentVariable("FINTS_USER"),
+        Pin = Environment.GetEnvironmentVariable("FINTS_PASS"),
+        Blz = int.Parse(Environment.GetEnvironmentVariable("FINTS_BLZ") ?? "0"), 
+        CustomerSystemId = Environment.GetEnvironmentVariable("FINTS_CUSTOMER_ID"),
+        Bic = Environment.GetEnvironmentVariable("FINTS_BIC")
+    }
+);
+// The initial syncronization is important, otherwise you don't get any data, when using the "CustomerSystemId".
+await client.Synchronization();
+
+// Only supports PushTAN
+TANDialog dialog = new TANDialog(tanDialog => Task.FromResult(""));
+
+HBCIDialogResult<List<AccountInformation>>? data = await client.Accounts(dialog);
+
+if (!data.IsSuccess)
+{
+    Console.WriteLine("Failed to get the account information!");
+    Environment.Exit(1);
+}
+
+foreach (AccountInformation accountInformation in data.Data)
+{
+    client.activeAccount = accountInformation;
+    HBCIDialogResult<AccountBalance> balance = await client.Balance(dialog);
+    // This takes a while... so use some worker or other asynchronous system to gather transactions
+    HBCIDialogResult<List<SwiftStatement>> transactions = await client.Transactions(dialog, DateTime.Today.Subtract(new TimeSpan(1)), DateTime.Now);
+
+    Console.WriteLine($"{accountInformation.AccountType} - {balance.Data.Balance}");
+}