Changes to List findings for a visit (Beta)

added the required property findings/items/question_id to the response with the 200 status

added the required property findings/items/question_reference_key to the response with the 200 status

added the optional property findings/items/evidence/items/anyOf[subschema #2: AudioEvidence]/visit_id to the response with the 200 status

added the optional property findings/items/evidence/items/anyOf[subschema #3: TextEvidence]/visit_id to the response with the 200 status