Add support for multivalue query string caching #318
Description
We currently use a serverless api gateway caching plugin for cache but this plugin doesn't support multi value (https://github.com/DianaIonita/serverless-api-gateway-caching?tab=readme-ov-file#limitations)
We must study and propose a way to add this support. We might find a way with the current plugin plus an additional one, or we may need to re-implement our caching solution in general.
For now, the only API that has multi value is the nano contract state API.