Loader: Add a GetFileType method to get the type of a loaded file

src/core/loader/elf.h

@@ -27,6 +27,14 @@ public:
      */
     static FileType IdentifyType(FileUtil::IOFile& file);
 
+    /**
+     * Returns the type of this file
+     * @return FileType corresponding to the loaded file
+     */
+    FileType GetFileType() override {
+        return IdentifyType(file);
+    }
+
     /**
      * Load the bootable file
      * @return ResultStatus result of function