Adding new AD cmdlets for DMSAs

[Xelu86]

PR Summary

Windows Server Preview introduces a new service account type known as Delegated Managed Service Account (DMSA). These cmdlets serve to migrate a service account to a DMSA.

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributors guide.
• Style: This PR adheres to the style guide.

[learn-build-service-prod]

Learn Build status updates of commit d912870:

✅ Validation status: passed

File	Status	Preview URL	Details
docset/winserver2025-ps/activedirectory/Complete-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/New-ADServiceAccount.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/Reset-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/Start-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/Undo-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 24094f5:

✅ Validation status: passed

File	Status	Preview URL	Details
docset/winserver2025-ps/activedirectory/ActiveDirectory.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/Complete-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/New-ADServiceAccount.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/Reset-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/Start-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)
docset/winserver2025-ps/activedirectory/Undo-ADServiceAccountMigration.md	✅Succeeded	View (WindowsServer2025-ps)

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[sdwheeler]

LGTM