datamodel: progress in configuration modeling

This issue is used to track the progress of modeling configuration designed in the table. Modeling also includes creating a jinja2 template to generate Lua configuration.

Sections:

• server
• options
• network
• static-hints
• slices
• view
• policy/daf
• stub-zones
• forward-zones
• rpz
• dnssec
• cache
• dns64
• logging
• monitoring
• lua