SqlParser & SqlGrammar subquery support

[lampersky]

fixes #11785

example query:

select * from (
    select d as e from (
        select c as d from (
            select b as c from (
                select a as b from t
            ) as l4
        ) as l3
    ) as l2
) as l1;

(this PR also includes changes from #12637 CTE support)

/cc @sebastienros

[hishamco]

Seems you forgot to fix this

[hishamco]

LGTM, but again we might need spend some time to replace Irony with fresh SqlParser built on top of Parlot