[1/3] Effects: Add a stereo widening effect

Based on self knowledge.
Aside from the filter, a HighPass method has been
added to Biquad in the DSP library

PS2: make compatible with vanir -DHO

Change-Id: I5dc8afa75cdf179c71ec38359887be9a5a60d4bd

Change-Id: I9f3db499c0f83deb6e3c4232ef6c566adbfbb2bb
Signed-off-by: DHOMD <DHO@dho.im>