Added status, adddate, startdate and enddate fields to OwnsGames Table.

meaning -
	status -
	0 - added to repo
	1 - started game
	2 - ended game
if status is 0 - only adddate is valid
status 1,2 - has corrosponding start and end date
this info will help build the timeline feature

Signed-off-by: Saikat <rychwdh2@illinois.edu>