Moved OpenGL texture generation to the Texture class

src/DataHandling/Texture.h

@@ -33,6 +33,9 @@ private:
     /// Load and RGB TGA image file to an array
     bool load_tga(const std::string& filename, uint8_t*& data_array);
 
+    /// Initialize the texture for OpenGL
+    void generate_texture();
+
     void invert_channels(uint8_t first_channel,uint8_t second_channel);
 };