added new API version in preview, new SKU named Customer Disk, new API for the SKU and additional models required for new SKU (Azure#15652)

* initial commit

* added new API version in preview, new SKU, new API for the SKU and additional models required for new SKU

* resolved some errors

* Update readme.go.md

* Update MarkDevicesShipped.json

* Update MarkDevicesShipped.json

* Update cSpell.json

* Update databox.json

* Update databox.json

* updated databox.json

* Update databox.json

* Update MarkDevicesShipped.json

* Update databox.json

* Update databox.json

* Update databox.json

* Update databox.json

* resolved comments

Author: ammaralavi

cSpell.json

@@ -76,6 +76,12 @@
                 "Tera"
             ]
         },
+        {
+            "filename": "**/specification/databox/resource-manager/Microsoft.DataBox/preview/2021-08-01-preview/databox.json",
+            "words": [
+                "Tera"
+            ]
+        },
         {
             "filename": "**/specification/servicebus/resource-manager/Microsoft.ServiceBus/stable/2017-04-01/Rules.json",
             "words": [