Support "List All In-App Purchases for an App"

[WesleyBatista]

Available here:

1. https://developer.apple.com/documentation/appstoreconnectapi/list_all_in-app_purchases_for_an_app_v1 ("deprecated")
2. https://developer.apple.com/documentation/appstoreconnectapi/list_all_in-app_purchases_for_an_app (v2)

v1 Example from their page:

{
    "data": [
        {
            "type": "inAppPurchases",
            "id": "ca38ea26-b7d5-4989-9615-c678cb05aabd",
            "attributes": {
                "referenceName": "YNC1",
                "productId": "YNCNC1",
                "inAppPurchaseType": "NON_CONSUMABLE",
                "state": "WAITING_FOR_SCREENSHOT"
            },
            "links": {
                "self": "https://api.appstoreconnect.apple.com/v1/inAppPurchases/ca38ea26-b7d5-4989-9615-c678cb05aabd"
            }
        }
    ],
    "links": {
        "self": "https://api.appstoreconnect.apple.com/v1/apps/6446998023/inAppPurchases"
    },
    "meta": {
        "paging": {
            "total": 1,
            "limit": 50
        }
    }
}

Challenge here seems to be:

1. the data field being a list instead of dict
2. the url requires the App ID in the middle of the path
   e.g.: GET https://api.appstoreconnect.apple.com/v1/apps/{id}/inAppPurchases