[ENHANCEMENT] Embed Metanorma for OSD support

[Sveino]

Is your feature request related to a problem? Please describe.
From 2025 shall Online Standards Development (OSD) be use for creating IEC standards. To support SchemaDev we would need to be able to support the IEC/ISO SMART work and integration with OSD.

Describe the solution you'd like
I would like that we utilize Metanorma library to generate the file format the is supported by OSD and any other standardisation organisation. Primarily would be the ability to generate from our internal AsciiDoc information, but importing could also be relevant.
It also looks like we can use the same library to generate Word document.

Describe alternatives you've considered
Alternative would be to look at other library or write the export separate.

Additional context
Here are relevant sources:

• OSD IT resources

• Metanorma | Standards beyond words

• metanorma/metanorma: The Metanorma project: www.metanorma.org

• Ruby gem to convert HTML and DOCX into AsciiDoc format.

• Writing in AsciiDoc, Part 4

• Metanorma now supports IEC standardization deliverables