start implementing CBOR and JSON streaming modes for httpQuery

[conradludgate]

This is a WIP to experiment with streaming responses for httpQuery. DO NOT MERGE.

This implements streaming via jsonlines.

streaming is only at the network layer, application layer still waits for all rows

example data format

before:

{
  "results": [
    {
      "fields": [
        { "name": "id", "dataTypeID": 23, "...": "..." },
        { "name": "name", "dataTypeID": 25, "...": "..." }
      ],
      "rows": [
        ["1", "Ada"],
        ["2", "Grace"]
      ],
      "command": "SELECT",
      "rowCount": 2,
      "rowAsArray": true
    },
    {
      "fields": [
        { "name": "active", "dataTypeID": 16, "...": "..." }
      ],
      "rows": [
        ["t"],
        ["f"]
      ],
      "command": "SELECT",
      "rowCount": 2,
      "rowAsArray": true
    }
  ]
}

after:

{"fields":[{"name":"id","dataTypeID":23,"...":"..."},{"name":"name","dataTypeID":25,"...":"..."}]}
"1"
"Ada"
"2"
"Grace"
{"command":"SELECT","rowCount":2}
{"fields":[{"name":"active","dataTypeID":16,"...":"..."}]}
"t"
"f"
{"command":"SELECT","rowCount":2}
{}

[conradludgate]

this change will be reverted, git hooks were blocking me from pushing this "secret"