Introduce Sensor implementation

Introduce Sensor implementation

Patch-Set-3
  Changes as per reviews/comments.
  Auto-implemented properties, dont throw exception in the error factory, protected/private tags, enums as per 3.0
Patch-Set-4
  Changes as per reviews/comments
  Separate function for destroying handles, renaming of one function etc.
Patch-Set-5: Minor Changes
Patch-Set-6: Minor Changes
Patch-Set-7: Changes as per review - removed exceptions from getters.
Patch-Set-8: Removed Stopwatch
Patch-Set-9: Minor Changes
Patch-Set-10: Minor Changes as per reviews/comments

signed-off-by:"Ankur Garg <ankur29.garg@samsung.com>"
Change-Id: I15ba1686d8954165781d4a8d4a63ff71b9a92d08