Add performance logging

- Add client handler execution time
- Add service handler execution time
- Add method call response time

[GF-4548] Add performance log to LS2 for bus performance measurement

Open-webOS-DCO-1.0-Signed-off-by: Sangwoo Kang <sangwoo82.kang@lge.com>

Change-Id: Ied7e2c5630b42b902a96750a3ca8a8d328b99a39