add: app sdk client auth flow example

crates/core/src/database/auth.rs

@@ -196,8 +196,8 @@ impl DataManager {
 
         let res = query_row!(
             &conn,
-            "SELECT * FROM users WHERE (SELECT jsonb_array_elements(grants::jsonb) @> ('{\"token\":\"' || $1 || '\"}')::jsonb)",
-            &[&token],
+            "SELECT * FROM users WHERE grants LIKE $1",
+            &[&format!("%\"token\":\"{token}\"%")],
             |x| Ok(Self::get_user_from_row(x))
         );