add admin for friends

django/src/friends/admin.py

@@ -1,3 +1,8 @@
 from django.contrib import admin
+from .models import Friend
 
-# Register your models here.
+@admin.register(Friend)
+class FriendAdmin(admin.ModelAdmin):
+	list_display = ('origin', 'target', 'status', 'created_at', 'updated_at')
+	search_fields = ('origin', 'target')
+	list_filter = ('created_at', 'updated_at', 'status')