Integrate the new Jupyter AST nodes in Ruff (#6086)

## Summary

This PR adds the implementation for the new Jupyter AST nodes i.e.,
`ExprLineMagic` and `StmtLineMagic`.

## Test Plan

Add test cases for `unparse` containing magic commands

resolves: #6087

crates/ruff_python_ast/src/visitor/preorder.rs

@@ -428,7 +428,8 @@ where
         | Stmt::Break(_)
         | Stmt::Continue(_)
         | Stmt::Global(_)
-        | Stmt::Nonlocal(_) => {}
+        | Stmt::Nonlocal(_)
+        | Stmt::LineMagic(_) => {}
     }
 }
 
@@ -723,6 +724,7 @@ where
                 visitor.visit_expr(expr);
             }
         }
+        Expr::LineMagic(_) => (),
     }
 }