CodeGen from PR 23230 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.AzureStackHCI to add version preview/2022-12-15-preview (#23230)

* Adds base for updating Microsoft.AzureStackHCI from version preview/2021-09-01-preview to version 2022-12-15-preview

* Updates readme

* Updates API version in new specs and examples

* 2022-12-15-preview changes from RPSaaSMaster

* update readme

* add vhdx

* backport changes from https://github.com/Azure/azure-rest-api-specs-pr/pull/12162

* Remove response schema from patch 202 response

* update patch example

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Co-authored-by: Patricia Huang <pathuang@pathuang-dev>