Defautl / Custom Session Times

[david-woodruff]

alks sessions open defaults to the max duration of 12 hours alks sessions console defaults to 1 hours session duration

Ideally these defaults could be configured in alks developer configure for each independent command plus the ability to pass a flag for these commands to override the default that is set.

so maybe alks sessions open -s 6 -a ..... would open a 6 hour session and alks sessions console -s 2 -a ... would be a 2 hour session.