[FR] UPM in assetstore core standard

[Thaina]

Feature proposal

• EDM4U Component: Package Manager

Unity releasing way to publish UPM inside asset store

https://discussions.unity.com/t/announcing-unity-core-standards-early-access/1690385/91

https://assetstore.unity.com/publishing/upm-publishing

Please release all google package here, especially this package