add: app sdk client auth flow example

crates/app/src/macros.rs

@@ -112,7 +112,7 @@ macro_rules! get_user_from_token {
                 Ok((grant, ua)) => {
                     if grant.scopes.contains(&$grant_scope) {
                         if ua.permissions.check_banned() {
-                            Some(tetratto_core::model::auth::User::banned())
+                            None
                         } else {
                             Some(ua)
                         }