Service for SDL library handling.

Add SDL service.

Update Service template.
Update Application class.

Fix N/A
New Log system.

Add Log class and macros to use it.

Update Config with log file name.

Fix N/A.
Some changes in Log system.

Add N/A.

Update Log macros and integer values modifier.

Fix N/A.
Comments update.

Add N/A.

Update file comments.

Fix N/A.