refactor(curd): improve relation handling and query methods

- Replace with() with withJoin() for more efficient left joins
- Fix foreign key and primary key assignments in relations
- Update index page queries to use relation index method-Modify relation method generation in model to use belongsTo instead of hasOne- Adjust table column definitions for relation fields

app/admin/service/curd/templates/controller/indexMethod.code

@@ -7,7 +7,7 @@
                 return $this->selectList();
             }
             list($page, $limit, $where) = $this->buildTableParams();
-            $count = self::$model::where($where)->count();
+            $count = self::$model::where($where)->{{relationIndexMethod}}->count();
             $list  = self::$model::where($where)->{{relationIndexMethod}}->page($page, $limit)->order($this->sort)->select()->toArray();
             $data  = [
                 'code'  => 0,