aurweb.db: add query, create, delete helpers

Takes sqlalchemy kwargs or stanzas:

query(Model, Model.Column == value)
query(Model, and_(Model.Column == value, Model.Column != "BAD!"))

Updated tests to reflect the new utility and a comment about upcoming
function deprecation is added to get_account_type().

From here on, phase out the use of get_account_type().

+ aurweb.db: Added create utility function
+ aurweb.db: Added delete utility function

The `delete` function can be used to delete a record by search
kwargs directly.

Example:
    delete(User, User.ID == 6)

All three functions added in this commit are typically useful to
perform these operations without having to import aurweb.db.session.
Removes a bit of redundancy overall.

Signed-off-by: Kevin Morris <kevr@0cost.org>

test/test_routes.py

@@ -7,14 +7,26 @@ import pytest
 from fastapi.testclient import TestClient
 
 from aurweb.asgi import app
+from aurweb.db import query
+from aurweb.models.account_type import AccountType
 from aurweb.testing import setup_test_db
 
 client = TestClient(app)
 
+user = None
+
 
 @pytest.fixture
 def setup():
-    setup_test_db("Users", "Session")
+    global user
+
+    setup_test_db("Users", "Sessions")
+
+    account_type = query(AccountType,
+                         AccountType.AccountType == "User").first()
+    user = make_user(Username="test", Email="test@example.org",
+                     RealName="Test User", Passwd="testPassword",
+                     AccountType=account_type)
 
 
 def test_index():
@@ -54,6 +66,7 @@ def test_language_invalid_next():
         response = req.post("/language", data=post_data)
     assert response.status_code == int(HTTPStatus.BAD_REQUEST)
 
+
 def test_language_query_params():
     """ Test the language post route with query params. """
     next = urllib.parse.quote_plus("/")
@@ -73,4 +86,5 @@ def test_error_messages():
     response1 = client.get("/thisroutedoesnotexist")
     response2 = client.get("/raisefivethree")
     assert response1.status_code == int(HTTPStatus.NOT_FOUND)
-    assert response2.status_code == int(HTTPStatus.SERVICE_UNAVAILABLE)
+    assert response2.status_code == int(HTTPStatus.SERVICE_UNAVAILABLE)
+