feat: reorganize source code + cleanup

include/renderer/texture.h

@@ -0,0 +1,17 @@
+#ifndef TEXTURE_H_
+#define TEXTURE_H_
+#include <string>
+#include <memory>
+
+class Texture {
+private:
+    unsigned int m_id;
+private:
+public:
+    Texture() {}
+    static std::unique_ptr<Texture> LoadFile(const std::string& filename);
+public:
+    inline const unsigned int GetID() const { return m_id; }
+};
+
+#endif // TEXTURE_H_