Custom asciidoc attribute

Summary

Let users set custom asciidoc attributes to adapt the output result

Use cases

For example, you may want to change the toc level, change the chapter label…

What is the expected new behavior?

The user can set any attribute (key/value pair) --> https://docs.asciidoctor.org/asciidoc/latest/attributes/document-attributes-ref/

Possible implementation

The Asciidoc for LabVIEW toolkit may have enough features to implement this. The main work will be in the setting UI.

Note: we need to check how the CLI tool can handle these new settings, i.e., how the user can set them through the command options if the render option is enabled.