Effect Offload Proxy for effects offload

Effect Proxy abstracts the sub effects to the upper layers.
It has the following functionalities:
- creation and release of sub effects
- routing the effect commands and process to the appropriate sub effect

Bug: 8174034.

Change-Id: Iec34b61104f0bbec4ef67c62f0710a5536dc325b
Signed-off-by: jpadmana <jayashree.r.padmanaban@intel.com>