Change SvcGetInfo 5 to return actual heap size, remove AMemoryAlloc since it is no longer needed with direct memory access, move some memory management logic out of AMemoryMgr, change default virtual filesystem path to AppData

Ryujinx.Core/OsHle/Svc/SvcHandler.cs

@@ -17,6 +17,8 @@ namespace Ryujinx.Core.OsHle.Svc
         private AMemory Memory;
 
         private static Random Rng;
+        
+        private ulong CurrentHeapSize;
 
         public SvcHandler(Switch Ns, Process Process)
         {
@@ -25,6 +27,7 @@ namespace Ryujinx.Core.OsHle.Svc
                 { 0x01, SvcSetHeapSize                   },
                 { 0x03, SvcSetMemoryAttribute            },
                 { 0x04, SvcMapMemory                     },
+                { 0x05, SvcUnmapMemory                   },
                 { 0x06, SvcQueryMemory                   },
                 { 0x07, SvcExitProcess                   },
                 { 0x08, SvcCreateThread                  },