Add ci

.gitlab-ci.yml

+stages:
+  - test
+
+
+test:
+  stage: test
+
+  cache:
+    paths:
+      - .venv
+    key: "${CI_COMMIT_REF_SLUG}"
+
+  script:
+    - apt install poetry
+    - poetry config settings.virtualenvs.in-project true
+    - poetry install
+    - poetry run ./manage.py test