✨ Add Items (crud, models, endpoints), utils, refactor (#14)

* Update CRUD utils to use types better.
* Simplify Pydantic model names, from `UserInCreate` to `UserCreate`, etc.
* Upgrade packages.
* Add new generic "Items" models, crud utils, endpoints, and tests. To facilitate re-using them to create new functionality. As they are simple and generic (not like Users), it's easier to copy-paste and adapt them to each use case.
* Update endpoints/*path operations* to simplify code and use new utilities, prefix and tags in `include_router`.
* Update testing utils.
* Update linting rules, relax vulture to reduce false positives.
* Update migrations to include new Items.
* Update project README.md with tips about how to start with backend.

{{cookiecutter.project_slug}}/backend/app/app/tests/utils/item.py

@@ -0,0 +1,17 @@
+from app import crud
+from app.db.session import db_session
+from app.models.item import ItemCreate
+from app.tests.utils.user import create_random_user
+from app.tests.utils.utils import random_lower_string
+
+
+def create_random_item(owner_id: int = None):
+    if owner_id is None:
+        user = create_random_user()
+        owner_id = user.id
+    title = random_lower_string()
+    description = random_lower_string()
+    item_in = ItemCreate(title=title, description=description, id=id)
+    return crud.item.create(
+        db_session=db_session, item_in=item_in, owner_id=owner_id
+    )

{{cookiecutter.project_slug}}/backend/app/app/tests/utils/user.py

@@ -1,6 +1,10 @@
 import requests
 
+from app import crud
 from app.core import config
+from app.db.session import db_session
+from app.models.user import UserCreate
+from app.tests.utils.utils import random_lower_string
 
 
 def user_authentication_headers(server_api, email, password):
@@ -11,3 +15,11 @@ def user_authentication_headers(server_api, email, password):
     auth_token = response["access_token"]
     headers = {"Authorization": f"Bearer {auth_token}"}
     return headers
+
+
+def create_random_user():
+    email = random_lower_string()
+    password = random_lower_string()
+    user_in = UserCreate(username=email, email=email, password=password)
+    user = crud.user.create(db_session=db_session, user_in=user_in)
+    return user