Feature Request: override HTTP method for specific queries

[ghost]

I don't want to open yet another discussion regarding HTTP GET vs POST for GraphQL queries, but I wonder if there is way today to customise the HTTP method per-query?

I wish to set the useGETForQueries flag to true by default in order to take advantage of HTTP caching.
However, I run the API on AWS API Gateway which introduces hard HTTP limitations, especially on the queryString:

• max 8192 characters for edge-optimised APIs
• max 10240 characters for regional APIs

In my current project, it happens that some queries reach those limitations, and API Gateway started to returns 413 Payload Too Large errors

I would find it useful to have an option to override the HTTP method for specific queries, for instance in the query options?

const { error, loading, data } = useQuery(SOME_TOO_LONG_QUERY_FOR_GET, {
  httpMethod: 'POST'
});

Not sure if that makes sense or if other ways could be better?