add sound sfxr loaders

framework/sound/src/mm/sound_loader_sfxr.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include <soloud_sfxr.h>
+
+#include <nlohmann/json_fwd.hpp>
+
+namespace MM {
+
+	// fwd
+	class Engine;
+
+	struct SoundLoaderSfxrPreset {
+		std::shared_ptr<::SoLoud::Sfxr> load(const ::SoLoud::Sfxr::SFXR_PRESETS preset, const int seed) const;
+	};
+
+	struct SoundLoaderSfxrJson {
+		std::shared_ptr<::SoLoud::Sfxr> load(const nlohmann::json& j) const;
+	};
+
+	struct SoundLoaderSfxrFile {
+		std::shared_ptr<::SoLoud::Sfxr> load(const std::string& path, MM::Engine& engine) const;
+	};
+
+} // MM
+