Refactor the memory implementation and add Regions

This commit does a major refactor of the memory implementation, it forms a memory map which is far cleaner than trying to access it through a handle table lookup. In addition, it creates a common interface for all memory kernel objects: KMemory from which all other kernel memory objects inherit. This allows doing resizing, permission change, etc without casting to the base memory type.

app/src/main/cpp/skyline/os.h

@@ -20,6 +20,7 @@ namespace skyline::kernel {
       public:
         std::shared_ptr<type::KProcess> process; //!< The KProcess object for the emulator, representing the guest process
         service::ServiceManager serviceManager; //!< This manages all of the service functions
+        MemoryManager memory; //!< The MemoryManager object for this process
 
         /**
          * @param logger An instance of the Logger class