Add support for .app files

src/emulator.cpp

@@ -289,7 +289,7 @@ bool Emulator::loadROM(const std::filesystem::path& path) {
 		return loadELF(path);
 	else if (extension == ".3ds")
 		return loadNCSD(path, ROMType::NCSD);
-	else if (extension == ".cxi")
+	else if (extension == ".cxi" || extension == ".app")
 		return loadNCSD(path, ROMType::CXI);
 	else {
 		printf("Unknown file type\n");
@@ -345,4 +345,4 @@ bool Emulator::loadELF(std::ifstream& file) {
 void Emulator::initGraphicsContext() {
 	gl.reset(); // TODO (For when we have multiple backends): Only do this if we are using OpenGL
 	gpu.initGraphicsContext();
-}
+}