Revert "vendor/pa: remove eXtremeBeats 2.0 version of libaudioeffect_jni"

This reverts commit d16783c0eea6e795f936d817474031400df4c1b5.
Revert "vendor/pa: eXtremeBeats Studio 2.0 Audio Mod"

This reverts commit ec2dfcbf24efc1bfb92c3c36d029ec75e8da16ec.