PXD-2174 ⁃ support querying array type in peregrine

[philloooo]

array types are supported in the dictionary, for example https://github.com/uc-cdis/gtex-dictionary/blob/master/gdcdictionary/schemas/case.yaml#L87

we should be able to search for an item in an array type, for example:

{
  case (consent_codes: ["a"]) {
    consent_codes
  }
}

match results which are superset of the query (see Phillis' comment)

[philloooo]

I think we should be able to search

case (consent_codes: ["a", "b"]){
  consent_codes
} and return

case {
consent_codes: ["a", "b", "c"]
}

[philloooo]

also general DataNode type interface should be fixed to handle non-string type fields