Run submission checks (#268)

* chore: celery #206

* chore: Support partial update for project

* chore: support patch for project 2

* refactor!: rework checks and submissions

* chore: allow models passed to tasks

* feat: added -k to test.sh

backend/api/tasks/extra_checks.py

@@ -0,0 +1,7 @@
+from api.models.submission import Submission
+from celery import shared_task
+
+
+@shared_task
+def task_extra_check_start(submission_id):
+    pass