Fixes: Query Issues and Export Issue

[jasper95]

This PR fixes couple of things

• using _in does not work for querying field with array values.

# model
user {
   name: String!
   assignees: jsonb # array
}

# let's say we want to query the user with `assignees` of [1,2]

# this will not work
query {
    user(where: {assignees: {_in: [1,2]}}) {
      name
    }
}

# this will work
query {
    user(where: {assignees: {_contains: [1,2]}}) {
      name
    }
}

• field with _ as starting characters are ignored. Im not sure if this is intentional but we can't force the users to avoid adding _ at the start.
• removed dist directory from .gitignore for installing package directly from git
• export buildVariables

[cpursley]

fyi @jasper95 ~ https://github.com/hasura/ra-data-hasura/issues/13#issuecomment-762837297

[sankalpmukim]

Hi! This is a crucial change that I need in my project. But it seems that because of the porting over of this package to here, this PR is not getting merged. @jasper95 can you please make this PR with referring to this issue in the other repository...

[cpursley]

@sankalpmukim - this library is no longer maintained and has been moved to: https://github.com/hasura/ra-data-hasura