launcher: add local game patches (#111)

launcher: add game patches

src/emulator.h

@@ -12,6 +12,7 @@ struct RunOptions {
 	Config::ConfigOptions config;
 	std::filesystem::path app0_dir;
 	std::filesystem::path elf;
+	std::filesystem::path game_patch;
 };
 
 void Run(const RunOptions& options);