[CD-13]Development guide: provide content about detyped and native management

Currently, the development guide contains documentation on what the configuration files contain and how to manage the configuration through command line CLI interface or web-based console.
However, management model of EAP can be adjusted programmatically by the native management API, which is entirely overlooked in product documentation. The native management API in turn uses the detyped management API to provide forward-compatible representation of all the complex data structures and interactions between them in management model.

Currently, there are two chapters on the topic in community documentation:

• Detyped management and the jboss dmr library
• The native management API