Version 5.0.55. functions for RGB signalization added

UFR_STATUS DL_API RgbControl(uint8_t red, uint8_t green, uint8_t blue);
UFR_STATUS DL_API SetRgbData(IN uint8_t *display_data, uint8_t data_length, uint8_t port_name);
UFR_STATUS DL_API SetRgbIntensity(uint8_t intensity);
UFR_STATUS DL_API GetRgbIntensity(VAR uint8_t *intensity);