Support for Unity Packages

[jwittner]

Add general support for Unity Packages and common modifications to related files.

• UnityPackage Support
  • Get-UnityPackage - find all unity packages by searching for package.json.
  • Test-UnityPackageMetaFileIntegry - validates all package contents have meta file integrity
• UnityPackageManifest Support
  • Get/Import-UnityPackageManifest - Get the manifest details for a Unity project
  • Add-UnityScopedRegistry - Adds a scoped registry to manifest
  • Remove-UnityScopedRegistry - Removes a scoped registry from the manifest
  • Add-UnityPackage - Adds unity package to the manifest
  • Set-UnityPackageVersion - Sets existing unity package listing to the version
  • Export-UnityPackageManifest
• UnityPackageManagerConfig
  • Import-UnityPackageManagerConfig
  • Export-UnityPackageManagerConfig
  • Login-UnityPackageManagerConfig - Gathers tokens for all scoped registries from provided manifest and updates.

Note: Right now we have to manually modify the upmconfig.toml file or have hand rolled scripts to configure them. This module would be a perfect place to be able to configure authentication for any given project by looking at the scoped registries and updating the configuration with updated authentication information.

For reference:

• https://docs.unity3d.com/Manual/upm-scoped.html
• https://docs.unity3d.com/Manual/upm-config-scoped.html