review(Driver.TwinCAT.Cli): clean parse errors + FlushLogging() in finally

Re-review at 7286d320. -008 (Low): ParseValue maps FormatException/OverflowException to a
clean CommandException (was raw stack trace) + tests. -009: FlushLogging() in all 5 commands'
finally blocks (parity with AbCip.Cli).

src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.TwinCAT.Cli/Commands/ProbeCommand.cs

@@ -59,6 +59,7 @@ public sealed class ProbeCommand : TwinCATTagCommandBase
         finally
         {
             await driver.ShutdownAsync(CancellationToken.None);
+            FlushLogging();
         }
     }
 }