core: Add dump RomFS support

This is added to LayeredFS, then the NCCH container and then the loader interface.

src/core/loader/loader.h

@@ -186,6 +186,15 @@ public:
         return ResultStatus::ErrorNotImplemented;
     }
 
+    /**
+     * Dump the RomFS of the applciation
+     * @param target_path The target path to dump to
+     * @return ResultStatus result of function
+     */
+    virtual ResultStatus DumpRomFS(const std::string& target_path) {
+        return ResultStatus::ErrorNotImplemented;
+    }
+
     /**
      * Get the update RomFS of the application
      * Since the RomFS can be huge, we return a file reference instead of copying to a buffer
@@ -196,6 +205,15 @@ public:
         return ResultStatus::ErrorNotImplemented;
     }
 
+    /**
+     * Dump the update RomFS of the applciation
+     * @param target_path The target path to dump to
+     * @return ResultStatus result of function
+     */
+    virtual ResultStatus DumpUpdateRomFS(const std::string& target_path) {
+        return ResultStatus::ErrorNotImplemented;
+    }
+
     /**
      * Get the title of the application
      * @param title Reference to store the application title into