[FEA] Audit ProjectExec

[kuhushukla]

Is your feature request related to a problem? Please describe.

• Ensure Spark and Rapids plugin version of the exec match functionality.

• Verify Config specific to the operator match.

• Verify API is consistent and fully translated.

• Port relevant tests.

[kuhushukla]

• Ensure Spark and Rapids plugin version of the exec match functionality.
  They do, minor nit is we can have projectList be a seq(NamedExpression) instead of just seq(Expression) but that is minor and mostly for api one to one matching. Keeping this issue open to fix that. (EDIT: closing as this is benign)

• Verify Config specific to the operator match.
  It does.

• Verify API is consistent and fully translated.
  It is. There are some expression evaluation optimizations which we handle very differently so it should stay as is.

• Port relevant tests.
  Project exec is a simple exec that is used in many places and looking at the tests it is mostly for plan verification which I think is a benign change to our unit tests that seems unnecessary.