BigInteger support

[rand0m-cloud]

In researching qdrant/qdrant-web-ui#87, this library is where we lose the point ID precision because of the JSON.parse call not supporting big integers. I'm not aware of a way to solve this issue without the possibility of breaking things downstream. We need to retrieve BigInteger from the API calls.

The json-bigint package looks promising to solve the JSON.parse problem, but this introduces a number | BigInteger type.