General framework to decorrelate the subqueries

**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**

In the current DataFusion, it has very limited support for correlated subqueries. It can only decorrelate the (NOT) IN/Exists predicate subqueries to Semi/Anti Joins. Even in the simplest IN/Exists cases, if the correlated expressions are not in the Filter/Join conditions, the current decorrelate rules will not support them.

In the paper "Unnesting Arbitrary Queries" by T. Neumann; A. Kemper
(http://www.btw-2015.de/res/proceedings/Hauptband/Wiss/Neumann-Unnesting_Arbitrary_Querie.pdf). It raise a mechanism to unnest arbitrary queries. This was already implemented by the Hyper DB:

For example:
select * from orders
where 1 in (select 1 from part left join (select l_partkey from lineitem where o_orderkey = 2) lineitem on p_partkey = lineitem.l_partkey)

https://hyper-db.de/interface.html#

Both SparkSQL and PostgreSQL do not support decorrelate such kind of queries.

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**Additional context**

Inizia leggendo il comportamento esistente di DataFusion per la decorrelazione delle sottoquery correlate e il paper di riferimento "Unnesting Arbitrary Queries". Usa l'esempio SQL nell'issue come caso obiettivo e verifica che le sottoquery correlate arbitrarie oltre all'attuale supporto di semi-join e anti-join per IN/EXISTS siano gestite correttamente.

Scritto dal modello di indicizzazione a partire dal testo della issue.