Support for on compile query validations

[WojciechMazur]

When using queries Datastore may throw exceptions at runtime while validating query. We can check code generated by macro and check if it may validate some conditions.

Cases on which query may fail:

1. Multiple inequality criteria (Option.isDefined is also checked using _ > null criteria
2. Inequality filter property and first sort order property are different.
   e.g Select * from Entity where foo > 'xyz' and bar = 123 order by bar