**Is your feature request related to a problem? Please describe.**

Is your feature request related to a problem? Please describe.
In ownCloud app we have a comprehensive set of settings which can be used for branding, MDM, configuration during development. AppConfig spec files are maintained manually.

When a new setting is added or an existing setting is changed in code, class settings metadata should be used to automatically generate an updated version of the AppConfig spec file.

Describe the solution you'd like
A script, unit test or tool using the OCClassSettings metadata to generate the AppConfig spec XML files automatically.

It should generate different versions with varying degrees of detail/sets of settings based on the status.

RELATED ISSUES

#755 on automatic generation of documentation from metadata.

TASKS

• Research (if needed)
• Create branch feature/feature_name
• Development tasks
  • Implement whatever
  • ...
• Code review and apply changes requested
• Design test plan
• QA
• Merge branch feature/feature_name into master

Originally posted by @felix-schwarz in owncloud/ios-app#842