feat: add is_featured/is_top_event fields and API endpoints

- Event model: added is_featured, is_top_event BooleanFields
- Migration 0007 applied to DB
- EventForm: checkboxes for both new fields
- EventAdmin: list_display, list_editable, list_filter for both flags
- FeaturedEventsAPI: POST /api/events/featured-events/ -> is_featured=True events
- TopEventsAPI: POST /api/events/top-events/ -> is_top_event=True events

mobile_api/urls.py

@@ -21,4 +21,6 @@ urlpatterns += [
     path('events/events-by-category/', EventsByCategoryAPI.as_view(), name='api_events_by_category'),
     path('events/events-by-month-year/', EventsByMonthYearAPI.as_view(), name='events_by_month_year'),
     path('events/events-by-date/', EventsByDateAPI.as_view(), name='events_by_date'),
+    path('events/featured-events/', FeaturedEventsAPI.as_view(), name='featured_events'),
+    path('events/top-events/', TopEventsAPI.as_view(), name='top_events'),
 ]