Page and Path overloads

[codemation]

Description

This PR implements default html page overloading, & client default_login_path overrides.

Page Overloads

It is possible to overload the existing login, register, activation, not_found, and forbidden pages using the page specific "overloader". Just like routers, this should be done after an EasyAuthClient is created.

Not Found - 404

from easyauth.pages import NotFoundPage

@NotFoundPage.mark()
def custom_not_found_page():
    return "Custom 404 Page"

Forbidden Page - 403

from easyauth.pages import ForbiddenPage

@ForbiddenPage.mark()
def not_allowed_page():
    return "Custom 404 Page"

Login Page & 401

from easyauth.pages import LoginPage

@LoginPage.mark()
def custom_login_page():
    return "Custom Login Page"

Register Page

from easyauth.pages import RegisterPage

@RegisterPage.mark()
def custom_register_page():
    return "Custom Register Page"

Activation Page

from easyauth.pages import ActivationPage

@ActivationPage.mark()
def custom_activation_page():
    return "Custom Login Page"

Path Overloads

The default /login and 401 redirect path can be overloaded by setting the default_login_path on EasyAuthClient.create().

    server.auth = await EasyAuthClient.create(
        server,
        token_server='0.0.0.0',
        token_server_port=8090,
        auth_secret='abcd1234',
        default_permissions={'groups': ['users']},
        default_login_path='/v1/internal/login'
    )