[FEATURE] Support for Microsoft 365 Multi-Geo cmdlets

[Borgquite]

Is your feature request related to a problem? Please describe.
At present it is not possible to use various Multi-Geo cmdlets inside PnP-PowerShell. For example, there is no equivalent for:
Get-SPOGeoMoveCrossCompatibilityStatus
Get-SPOUserAndContentMoveState
Start-SPOUserAndContentMove
Get-SPOSiteContentMoveState
Start-SPOSiteContentMove
Get-SPOUnifiedGroup
Set-SPOUnifiedGroup
Get-SPOUnifiedGroupMoveState
Start-SPOUnifiedGroupMove
Set-SPOMultiGeoExperience

These are all available in the Microsoft SPO Management Shell, but due to the limitations of this module, there appears to currently be no way to perform these MultiGeo functions e.g. via an app registration, or using a managed identity.

Describe the solution you'd like
PnP PowerShell cmdlets to be implemented to migrate OneDrive, SharePoint sites and Microsoft 365 Groups using MultiGeo functionality

Describe alternatives you've considered
It is possible to manage these via the Microsoft SPO Management Shell but this does not support app registrations or managed identity, and so unattended scripts must use basic authentication(!)

Additional context
See discussion here: #3536

[gibi916]

+1 Also need it. Thanks !