core: Track load offsets of NSO modules

Needed for backtrace decomposition

src/core/core.h

@@ -8,6 +8,7 @@
 #include <memory>
 #include <string>
 
+#include <map>
 #include "common/common_types.h"
 #include "core/file_sys/vfs_types.h"
 #include "core/hle/kernel/object.h"
@@ -285,6 +286,10 @@ public:
 
     void ClearContentProvider(FileSys::ContentProviderUnionSlot slot);
 
+    void RegisterNSOModule(std::string name, VAddr start_address);
+
+    const std::map<VAddr, std::string, std::greater<>>& GetRegisteredNSOModules() const;
+
 private:
     System();