Implement Objection interpreter

• this interpreter should be part of a new package @ucast/objection (put it in packages/objection)
• it should support the same operators as js interpreter from @ucast/js (except $all, $where, $size. $elemMatch operates only on related table and always perform a join)
• it should allow to pass custom operators
• it should use createInterpreter function from @ucast/core to create interpret function
• the return value of interpret function is a Objection.js query builder
• it should take initial query builder as an argument
• auto join support on related table

[otaviosoares]

Just bringing our conversation here. First of all, thank you for guiding me through it.

I believe I’ve implemented most of these topics now. I’m creating a WIP PR so you can point any issues with the implementation.

[otaviosoares]

Thank you for the support. Great work.