Add JSON Schema for subscription migration listing - #8586

Add JSON Schema for subscription migration listing#8586

gonzaloriestra wants to merge 2 commits into

donald/subscription-migrations-cancel-json-schemaShopify/cli:donald/subscription-migrations-cancel-json-schemafrom

gonzalo/json-subscription-migrations-listShopify/cli:gonzalo/json-subscription-migrations-listCopy head branch name to clipboard