* apm: Refactoring/Unstub service
This PR implement some IPC calls of apm service:
- nn::apm::IManager is fully implemented.
- nn::apm::ISession is fully implemented (close#1633).
- nn::apm::ISystemManager is partially implemented.
nn::appletAE::ICommonStateGetter have some calls which are just a layer of apm IPC calls. What we did in some calls was wrong, it's fixed now!
Everything is checked with RE.
* abstract Apm *Server as Thog requested
* abstract ISession and fix other classes
* Address gdkchan feedback
* Fix class
* Fix Logging
