TeleService: Add support to show call duration when diconnect

Add the strings for the call duration dialog.
Add the method to show the call duration dialog.
Check the setting to decide whether to show the
call duration dialog when disconnect.

Change-Id: I5c5c54469757625e170c072c1b1e77eec5173e67
CSVT : add SIM/MSIM videocall setting menu(code style fix: one tab and two long line)

Change-Id: I739e7da6d7d3d60a9570074b7831ea34a761c43d