Add SparkFun_MY1690_MP3_Decoder_Arduino_Library (#6184)

Author: lewispg228

repositories.txt

@@ -6339,6 +6339,7 @@ https://github.com/sparkfun/SparkFun_MPL3115A2_Breakout_Arduino_Library
 https://github.com/sparkfun/SparkFun_MPU-9250_Breakout_Arduino_Library
 https://github.com/sparkfun/SparkFun_MS5637_Arduino_Library
 https://github.com/sparkfun/SparkFun_MS5803-14BA_Breakout_Arduino_Library
+https://github.com/sparkfun/SparkFun_MY1690_MP3_Decoder_Arduino_Library
 https://github.com/sparkfun/SparkFun_OPT4048_Arduino_Library
 https://github.com/sparkfun/SparkFun_OWire_Arduino_Library
 https://github.com/sparkfun/SparkFun_Particle_Sensor_SN-GCJA5_Arduino_Library