[Assets] Add example

examples/Assets/main.cpp

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+#include <Nazara/Audio.hpp>
+#include <Nazara/Core.hpp>
+#include <Nazara/Platform.hpp>
+
+int main(int argc, char* argv[])
+{
+	std::filesystem::path resourceDir = "assets";
+	if (!std::filesystem::is_directory(resourceDir) && std::filesystem::is_directory("../.." / resourceDir))
+		resourceDir = "../.." / resourceDir;
+
+	Nz::Application<Nz::Audio> app(argc, argv);
+
+	auto& windowing = app.AddComponent<Nz::WindowingAppComponent>();
+	auto& fs = app.AddComponent<Nz::FilesystemAppComponent>();
+	fs.Mount("game:/", resourceDir);
+
+	auto& catalog = app.AddComponent<Nz::AssetCatalogAppComponent>();
+	catalog.AddFolder("game:/");
+
+	// Load an asset from its path
+	Nz::Asset<Nz::Music> music = Nz::Asset<Nz::Music>::LoadFromFile("game:/examples/Audio/file_example_MP3_700KB.nzasset");
+
+	// or by its name
+	music = catalog.Load<Nz::Music>("file_example_MP3_700KB");
+	music->Play();
+
+	Nz::Asset<Nz::Sound> sound = catalog.Load<Nz::Sound>("examples/Audio/siren");
+	sound->Play();
+
+	app.AddUpdaterFunc([&]
+		{
+			if (!music->IsPlaying())
+				app.Quit();
+
+			std::this_thread::sleep_for(std::chrono::milliseconds(100));
+		});
+
+	return app.Run();
+}

examples/Assets/xmake.lua

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+target("Assets")
+	add_deps("NazaraGraphics", "NazaraAudio")
+	add_files("main.cpp")