Automate Patch and Revision versions using Azure DevOps Variable Library (#6462)

* Automate Patch and Revision versions using Azure DevOps Variable Library

Add version automation to the Open (Foundation) repo, mirroring the pattern
from the Aggregator repo. Uses a separate '{MajorVersion}-Foundation-Versions'
Library to track PatchVersion and Revision across builds.

- Add WindowsAppSDK-VersionVariables.yml to load version vars from Library
- Add WindowsAppSDK-UpdateLibrary-Job.yml to bump versions after official builds
- Update Official/PR/Nightly pipelines to include version templates
- Update PackTransportPackage to use Library-based versioning for official builds
- Patch only bumps on official builds (not PR or Nightly)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Remove the system.debug, since parameters.debug is empty

* Change name of pipeline run

* Respond to Agne 1

* Revert the change to depending on Publish

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Co-authored-by: Chris Wall (WIN SDE) <chriwall@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>