split gamecard into its own app, add models to teamsnap for custom fields (images)

gamecard/urls.py

@@ -0,0 +1,7 @@
+from django.urls import path
+
+from .views import gamecard
+
+urlpatterns = [
+    path("<int:team_id>/event/<int:event_id>/gamecard/", gamecard, name="gamecard")
+]