Fix EmulatorConfig initialization order

`config` was being consumed much too early before it has a chance to
call `load`. This caused GPU to read weird uninitialized data, and then
`load` called, and then further initialization to occur based on default
data and the data inside of `config.toml`. `EmulatorConfig` needs to be
loaded in first before any sort of initialization happens, by adding a
new constructor so that it can be initialized sooner.

include/emulator.hpp

@@ -25,13 +25,13 @@ enum class ROMType {
 };
 
 class Emulator {
+	EmulatorConfig config;
 	CPU cpu;
 	GPU gpu;
 	Memory memory;
 	Kernel kernel;
 	Crypto::AESEngine aesEngine;
 
-	EmulatorConfig config;
 	SDL_Window* window;
 
 #ifdef PANDA3DS_ENABLE_OPENGL