Free type left hand side (field)

[jonathan-chin]

Is your feature request related to a problem? Please describe.
My use case is I want to provide non technical users a way to build a query JSON object without having to know how to code. I don't want them to worry about forgetting a { or " etc. However, the fields are unpredictable and cannot be coded into the config (at least not easily)

Describe the solution you'd like
I'd love it if users can type into the left hand side of each rule. Right now, it's an autocomplete that throws an error if what's typed in is not a listed field in the config (at least, I think that's how it works). I'd like users to be able to enter field names that haven't been predefined; I'd like them to have be able to enter multiple rules like that.

Describe alternatives you've considered
Dynamically generating a config is difficult or impossible. I want users to search against JSON keys in a JSONB column in a postgres database, so the fields can be anything really. to pre-generate them for react-awesome-query-builder would be very inefficient

[ukrbublik]

Duplicate of #304