pip installed package doesn't include templates, migrations

[simonw]

After downloading and extracting:

/tmp % find django-sql-dashboard-0.1a2 
django-sql-dashboard-0.1a2
django-sql-dashboard-0.1a2/PKG-INFO
django-sql-dashboard-0.1a2/django_sql_dashboard
django-sql-dashboard-0.1a2/django_sql_dashboard/models.py
django-sql-dashboard-0.1a2/django_sql_dashboard/__init__.py
django-sql-dashboard-0.1a2/django_sql_dashboard/apps.py
django-sql-dashboard-0.1a2/django_sql_dashboard/admin.py
django-sql-dashboard-0.1a2/django_sql_dashboard/views.py
django-sql-dashboard-0.1a2/pyproject.toml
django-sql-dashboard-0.1a2/README.md
django-sql-dashboard-0.1a2/django_sql_dashboard.egg-info
django-sql-dashboard-0.1a2/django_sql_dashboard.egg-info/PKG-INFO
django-sql-dashboard-0.1a2/django_sql_dashboard.egg-info/SOURCES.txt
django-sql-dashboard-0.1a2/django_sql_dashboard.egg-info/requires.txt
django-sql-dashboard-0.1a2/django_sql_dashboard.egg-info/top_level.txt
django-sql-dashboard-0.1a2/django_sql_dashboard.egg-info/dependency_links.txt
django-sql-dashboard-0.1a2/setup.py
django-sql-dashboard-0.1a2/setup.cfg