apm/am: Refactoring/Unstub services (#1662)

* 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

Ryujinx.HLE/HOS/Services/Apm/PerformanceState.cs

@@ -0,0 +1,25 @@
+namespace Ryujinx.HLE.HOS.Services.Apm
+{
+    class PerformanceState
+    {
+        public PerformanceState() { }
+
+        public bool CpuOverclockEnabled = false;
+
+        public PerformanceMode PerformanceMode = PerformanceMode.Default;
+        public CpuBoostMode    CpuBoostMode    = CpuBoostMode.Disabled;
+
+        public PerformanceConfiguration DefaultPerformanceConfiguration = PerformanceConfiguration.PerformanceConfiguration7;
+        public PerformanceConfiguration BoostPerformanceConfiguration   = PerformanceConfiguration.PerformanceConfiguration8;
+
+        public PerformanceConfiguration GetCurrentPerformanceConfiguration(PerformanceMode performanceMode)
+        {
+            return performanceMode switch
+            {
+                PerformanceMode.Default => DefaultPerformanceConfiguration,
+                PerformanceMode.Boost   => BoostPerformanceConfiguration,
+                _                       => PerformanceConfiguration.PerformanceConfiguration7
+            };
+        }
+    }
+}