loader: add support for etaHEN cheats

src/loader/gamePatch.h

@@ -4,6 +4,7 @@
 #include "common/common.h"
 
 #include <filesystem>
+#include <vector>
 
 namespace Loader {
 
@@ -11,7 +12,10 @@ struct Program;
 
 namespace GamePatch {
 
-bool Apply(const std::filesystem::path& plan_path, Program* program);
+bool Apply(const std::filesystem::path& plan_path, Program* main_program,
+           const std::vector<Program*>& programs);
+bool ApplyPending(Program* program);
+void Clear();
 
 } // namespace GamePatch