Curl: fix pagination problems

[DinosL]

Curl was not capturing the response from GET requests, resulting in missing pagination metadata (e.g., cursor) required for paginated queries.

built on top of #205

[carlopi]

Could you possibly check the similar code in httpfs_httplib_client.cpp:

        unique_ptr<HTTPResponse> Get(GetRequestInfo &info) override {
                if (state) {
                        state->get_count++;
                }
                auto headers = TransformHeaders(info.headers, info.params);
                if (!info.response_handler && !info.content_handler) {
                        return TransformResult(client->Get(info.path, headers));
                } else {
                        return TransformResult(client->Get(
                            info.path.c_str(), headers,
                            [&](const duckdb_httplib_openssl::Response &response) {
                                    auto http_response = TransformResponse(response);
                                    return info.response_handler(*http_response);
                            },
                            [&](const char *data, size_t data_length) {
                                    if (state) {
                                            state->total_bytes_received += data_length;
                                    }
                                    return info.content_handler(const_data_ptr_cast(data), data_length);
                            }));
                }
        }

In particular, I am not sure if they can be made more similar to each other the GET handling.

[carlopi]

Thanks!