[Feature]: Host Azure modules in public ACR in addition to PowerShell Gallery

### Description of the new feature

PowerShell Gallery sometimes goes down:

* Like today:
* Status history:

PowerShell Gallery does not guarantee uptime (but people still add business dependency on it being up):

*

[`Microsoft.PowerShell.PSResourceGet`](https://github.com/PowerShell/PSResourceGet) has support for Azure Container Registry:

*

Microsoft already has public ACR instances for other Azure related things, like Azure Verified Modules:

*

### Proposed implementation details (optional)

* Host Azure PowerShell modules in a public Azure Container Registry as backup to PowerShell Gallery, might even become the default in the future?
* Make [Az.Tools.Installer](https://www.powershellgallery.com/packages/Az.Tools.Installer) aware of this new ACR instance too.