feat: Adds route query parameter to home, htmx updates url, and working next parameter for login

Sources/App/Extensions/RouteBuilder+protected.swift

@@ -5,6 +5,11 @@ extension RoutesBuilder {
   // Used to ensure views are protected, redirects users to the login page if they're
   // not authenticated.
   var protected: any RoutesBuilder {
-    grouped(User.credentialsAuthenticator(), User.redirectMiddleware(path: "login"))
+    grouped(
+      User.credentialsAuthenticator(),
+      User.redirectMiddleware { req in
+        "login?next=\(req.url)"
+      }
+    )
   }
 }