Enable DwgWriter for Attribute Entities

[DomCR]

Discussed in #444

^{Originally posted by w4l1k September 10, 2024}
Hi,
how can I insert a block with attributes into the model?
I can't figure out how to do it, here is my code .
I only see the circle on the model without the text.
When I insert the block manually, the text appears.

	CadDocument doc = new(ACadVersion.AC1024);
	BlockRecord record = new("my_block");

	record.Entities.Add(new Circle
	{
		Radius = 10,
		Center = XYZ.Zero
	});

	record.Entities.Add(new AttributeDefinition()
	{
		InsertPoint = XYZ.Zero,
		Prompt = "Name ???",
		Tag = "CIRCLE_NAME",
		Value = "Circilla",
		HorizontalAlignment = TextHorizontalAlignment.Left,
		Height = 18,
		AttributeType = AttributeType.SingleLine,
	});

	doc.BlockRecords.Add(record);

	doc.Entities.Add(new Insert(record)
	{
		InsertPoint = new XYZ(100, 100, 0),
		XScale = 0.8,
		YScale = 0.8,
	});

	using DwgWriter writer = new("../../../test.dwg", doc);
	writer.OnNotification += NotificationHelper.LogConsoleNotification;
	writer.Write();</div>