Add new public APIs to set effect method

Add new public APIs to set effect method

Preprocesing functionality was added.
There were two pair of functions for supporting audio effects such as
noise-suppression and acoustic echo cancellation.

 - sound_manager_set_effect_method_with_reference
 - sound_manager_get_effect_method_with_reference
 - sound_manager_set_effect_method
 - sound_manager_get_effect_method

[Version] 0.7.9
[Issue Type] Public API

Change-Id: I28026a39615fed8790f1f2b3f3e062d417c56750
Signed-off-by: Jaechul Lee <jcsing.lee@samsung.com>