### Description of the new feature Currently this feature is available in CLI [`az appconfig kv import`](https://learn.microsoft.com/en-us/cli/azure/appconfig/kv?view=azure-cli-latest#az-appconfig-kv-import). It would be great if we have the same functionality through Azure PowerShell Cmdlet. ### Proposed implementation details (optional) Same functionality as [`az appconfig kv import`](https://learn.microsoft.com/en-us/cli/azure/appconfig/kv?view=azure-cli-latest#az-appconfig-kv-import) with one additional option to upload from in-memory string type variable holding the configuration data in JSON format.