✨ Use Pydantic BaseSettings for config settings (#87)

* Use Pydantic BaseSettings for config settings

* Update fastapi dep to >=0.47.0 and email_validator to email-validator

* Fix deprecation warning for Pydantic >=1.0

* Properly support old-format comma separated strings for BACKEND_CORS_ORIGINS

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

{{cookiecutter.project_slug}}/backend/app/app/db/init_db.py

@@ -1,5 +1,5 @@
 from app import crud
-from app.core import config
+from app.core.config import settings
 from app.schemas.user import UserCreate
 
 # make sure all SQL Alchemy models are imported before initializing DB
@@ -14,11 +14,11 @@ def init_db(db_session):
     # the tables un-commenting the next line
     # Base.metadata.create_all(bind=engine)
 
-    user = crud.user.get_by_email(db_session, email=config.FIRST_SUPERUSER)
+    user = crud.user.get_by_email(db_session, email=settings.FIRST_SUPERUSER)
     if not user:
         user_in = UserCreate(
-            email=config.FIRST_SUPERUSER,
-            password=config.FIRST_SUPERUSER_PASSWORD,
+            email=settings.FIRST_SUPERUSER,
+            password=settings.FIRST_SUPERUSER_PASSWORD,
             is_superuser=True,
         )
         user = crud.user.create(db_session, obj_in=user_in)