How do we add support for the postgres OVERLAPS operation?

[bneigher]

Hello -- absolutely LOVE this library. We've completely built our unit and e2e testing around it and it is super slick.

I had a question regarding supporting an operator: OVERLAPS which appears to not be supported:

SELECT (
  timestamp '2022-11-23 03:00:00.362+00', timestamp '2022-11-24 03:00:00.362+00'
) OVERLAPS (
  timestamp '2022-11-24 03:00:00.362+00', timestamp '2022-11-25 03:00:00.362+00'
);

I am unable to perform this kind of query.. getting the following error message:

'Unexpected kw_overlaps token: "overlaps". Instead, I was expecting to see one of the following:\n' +
          '\n' +
          '    - A "op_cast" token\n' +
          '    - A "lbracket" token\n' +
          '    - A "kw_is" token\n' +
          '    - A "kw_notnull" token\n' +
          '    - A "kw_is" token\n' +
          '    - A "kw_isnull" token\n' +

It looks like OVERLAPS is not supported.. can I add this in using registerOperator or registerFunction? I believe this is the only thing not supported in my entire API.

[bneigher]

#298