frontend: Support ORDER BY arbitrary column

[Enter-tainer]

Describe the bug

Currently only ORDER BY can only apply to output columns. But actually, it should work with arbitrary columns, take the example from PostgreSQL's document. Column c is not SELECTed, but we can still ORDER BY c.

/* this SHOULD work */
SELECT a, b FROM table1 ORDER BY a + b, c;

To Reproduce

create table t(a int, b int);
dev=> explain select a from t order by b;
ERROR:  Item not found: output column "b"

Expected behavior
Should produce correct execution plan rather than errors.

[skyzh]

SELECT a, b FROM table1 ORDER BY a + b, c;

This query might need some special care. c will become a hidden column in materialized view, but it's not a row_id as we expected before.

[skyzh]

I guess @likg227 can first help us support queries like select a from t order by b; in binder. After that, we can then work on visibility issues like b should not be visible in both MV and batch queries.