fix(day-view): add custom cssClass to allDay events

Fixes #769

Author: CommonGuy

projects/angular-calendar/src/modules/day/calendar-day-view.component.ts

@@ -84,6 +84,7 @@ export interface DayViewEventResize {
         (drop)="eventDropped($event, view.period.start, true)">
         <mwl-calendar-day-view-event
           *ngFor="let event of view.allDayEvents; trackBy:trackByEventId"
+          [ngClass]="event.cssClass"
           [dayEvent]="{event: event}"
           [tooltipPlacement]="tooltipPlacement"
           [tooltipTemplate]="tooltipTemplate"