Module query macro: support dealing with options and results

[cloutiertyler]

At a bare minimum, support:

query!(|x: X| x.option_field.is_some())
query!(|x: X| x.option_field.is_none())
query!(|x: X| x.result_field.is_ok())
query!(|x: X| x.result_field.is_err())

[cloutiertyler]

Deprioritizing the query macro in favor of the low level multi-column index methods

[RReverser]

I'm closing this since macro has been removed for now.