Add scheduler, add support for GSC method adding, command adding.

Some cleanup. Add exception handler.

src/utils/hook.cpp

@@ -244,4 +244,9 @@ namespace utils::hook
 
 		return result;
 	}
+
+	void* get_displacement_addr(int original)
+	{
+		return reinterpret_cast<void*>(*reinterpret_cast<int*>(original + 1) + original + 5);
+	}
 }

src/utils/hook.hpp

@@ -125,6 +125,8 @@ namespace utils::hook
 
 	void* assemble(const std::function<void(assembler&)>& asm_function);
 
+	void* get_displacement_addr(int original);
+
 	template <typename T>
 	T extract(void* address)
 	{