Move sensor hal service to class 'hal' from main.

Moving sensor hal service to hal class.

Bug: 36576271
Test: Ensure that sensors still stream.
Change-Id: I1ab984063c48401ee535b9be4df75d554d91578f
(cherry picked from commit 5d0b2e7c373d19eeffc915e5bcb0aaa9187f5a8c)
1 file changed