Implemented feature to show custom trigger text option (N items selected)

[prashantpimpale93]

Implemented feature to show custom trigger text option (N items selected).

• When a user selects two or less item then it will show that items value in the trigger option

• When selected options are more than two then the custom trigger option gets enabled and will show (N) items selected

When two options selected:

When 4 options selected:

[CuppaLabs]

Please resolve the conflicts.