feat(testing.requests): add Request.__init__

This new constructor is a beginning to making Request a bit more easy
to deal with for standard testing needs. With this commit, users can
now specify a `user` and `authenticated` state while constructing a
Request:

    request = Request(user=some_user, authenticated=True)

By default, the `authenticated` kwarg is set to False and `user` is
set to `aurweb.testing.requests.User()`.

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

aurweb/testing/requests.py

@@ -29,13 +29,17 @@ class URL:
 class Request:
     """ A fake Request object which mimics a FastAPI Request for tests. """
     client = Client()
-    user = User()
     url = URL()
 
     def __init__(self,
+                 user: User = User(),
+                 authenticated: bool = False,
                  method: str = "GET",
                  headers: Dict[str, str] = dict(),
                  cookies: Dict[str, str] = dict()) -> "Request":
+        self.user = user
+        self.user.authenticated = authenticated
+
         self.method = method.upper()
         self.headers = headers
         self.cookies = cookies