Feature: Implement API to allow application to use AssetManagment which is newly defined by Profinet specification

The upcoming new Profinet specification V2.3 Ed2 MU4 contains the feature "AssetManagment" which is highly requested by AIDA.
AssetManagment allows browsing a "maschine" with a Profinet IO Device interface for connected, none-Profinet devices. It is possible to check their hardware and firmware version.

The API defined for PNSv3 needs to be implemented allowing Application to use AssetManagment for PNSv4 as well. Due to memory restrictions PNSv4 will provide a reduced feature set of the feature. Only 4 KB (maximum supported value for acyclic services) shall be usable for Assets.