Add a new script to help finding transaction details based on an order id to help with customer support.

[danieldaquino]

Docs: https://apple.github.io/app-store-server-library-node/classes/AppStoreServerAPIClient.html#requestTestNotification

[linear]

IOS-1823 Add a new script to help finding transaction details based on an order id to help with customer support.

[danieldaquino]

Created draft here: #19

I was building this to help a customer, but in the end the cause of the issue was different, so I paused development on this and submitted a draft to continue when we hit this issue again (or when convenient)