[Isthmus][SQLExpression] Produce projection/filter extended expressions with predefined column names

[davisusanibar]

The aim of this enhancement is to produce projection/filter extended expressions with predefined column names. The SQL Expression currently generates column names using the format column-[0...n]

Current:

new SqlExpressionToSubstrait().convert(new String[]{"N_REGIONKEY + 10", "N_NATIONKEY > 18"}, ...);

Produce:
column-1   column-2
23         false
30         true

Proposal:

new SqlExpressionToSubstrait().convert(new String[]{"N_REGIONKEY + 10", "N_NATIONKEY > 18"}, 
    new String[]{"key_10", "key_18"},  ...);

Produce:
key_10   key_18
23       false
30       true