add JWT auth

.gitlab-ci.yml

backend/metagenedb/apps/accounts/__init__.py

backend/metagenedb/apps/accounts/apps.py

backend/metagenedb/apps/accounts/migrations/__init__.py

backend/metagenedb/apps/accounts/urls.py

backend/metagenedb/settings/django.py

backend/metagenedb/tests/__init__.py

backend/metagenedb/tests/apps/__init__.py

backend/metagenedb/tests/apps/accounts/__init__.py

backend/metagenedb/tests/apps/accounts/tests.py

backend/metagenedb/tests/test_user.py

backend/metagenedb/urls.py

backend/pytest.ini

backend/requirements.txt

backend/requirements_dev.txt