[FEATURE]: Indexes with Included Columns (PG)

### Describe what you want

In PG there is a performant options when creating index or unique index. We can include additional data into index data to retrieve some data with index retrieve without more fetch. Example format:
```
CREATE [UNIQUE] INDEX index_name
ON table_name(key_column_list)
INCLUDE(included_column_list);
```
(Contraint cannot be used with Included columns!)

Should I add an PR?