added the admin panel for calendar app location model and event model

widget_aguandhischipmunks/calendar_app/admin.py

 from django.contrib import admin
+from .models import Event, Location
 
-# Register your models here.
+class LocationAdmin(admin.ModelAdmin):
+    model = Location
+    list_display = ("mode", "venue",)
+    search_fields = ("mode", "venue",)
+    list_filter = ("venue",)
+
+
+class EventAdmin(admin.ModelAdmin):
+    model = Event
+    list_display = ("target_datetime", "activity", "estimated_hours", "course", "location",)
+    search_fields = ("activity", "course", "location",)
+
+
+admin.site.register(Event, EventAdmin)
+admin.site.register(Location, LocationAdmin)