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/config.hpp

@@ -8,6 +8,7 @@ struct EmulatorConfig {
 	bool shaderJitEnabled = false;
 	RendererType rendererType = RendererType::OpenGL;
 
+	EmulatorConfig(const std::filesystem::path& path);
 	void load(const std::filesystem::path& path);
 	void save(const std::filesystem::path& path);
 };