Add initial web app scaffolding

section7/router/__init__.py

@@ -0,0 +1,23 @@
+from typing import Callable
+from typing import NamedTuple
+from typing import Sequence
+from typing import Tuple
+
+from section7.router.error_handler import handle_error
+from section7.router.home import display_home
+
+
+class Routable(NamedTuple):
+    """Structure for storing details for a given route
+
+    :param route: String indicating the Flask URL rule to apply to the route entry
+    :param entrypoint: The callable that Flask should invoke when the route is accessed
+    :param methods: Sequence of HTTP method verbs that should be accepted by the route
+    """
+
+    route: str
+    entrypoint: Callable
+    methods: Sequence[str] = ("GET",)
+
+
+ROUTES: Tuple[Routable, ...] = (Routable(route="/", entrypoint=display_home),)