Added support for SoundRecorder processing interval

https://github.com/LaurentGomila/SFML/commit/b9d0295c89ec91a4e1cd8912c3a77fd4a87df28b

https://github.com/LaurentGomila/CSFML/commit/87d69530a0ab2f70feadf9a862711263b6325290