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

[o-l-a-v]

Description of the new feature

PowerShell Gallery sometimes goes down:

• Like today: https://github.com/PowerShell/PowerShellGallery/issues/279
• Status history: https://github.com/PowerShell/PowerShellGallery/blob/master/psgallery_status.md

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

• https://www.powershellgallery.com/policies/Terms#:~:text=the%20Unsolicited%20Feedback.-,Warranties,-MICROSOFT%2C%20AND%20OUR

Microsoft.PowerShell.PSResourceGet has support for Azure Container Registry:

• https://learn.microsoft.com/en-us/powershell/gallery/powershellget/supported-repositories

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

• https://azure.github.io/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 aware of this new ACR instance too.

[isra-fel]

Worth noting Offline Installation of Azure PowerShell is also an option when PSGallery is down.