Supports Yarn v2 and Yarn v3

[Losses]

This pull request enables user to use yarn berry (aka yarn v2 and yarn v3) as their package manager, and fixed #4483

[mklueh]

Can this please be merged? Very inconvenient having to patch things to get ionic working with berry

[IT-MikeS]

Definitions need to be updated for the new pkgManager entry and a test app/instructions need to be added so this can be reviewed.

[Losses]

Definitions need to be updated for the new pkgManager entry and a test app/instructions need to be added so this can be reviewed.

Sure, we can test if this works with the following steps:

1. Create an empty ionic application with Yarn v1;
2. Run the following command:

 yarn set version berry

3. Try to build the application and see if any error emerges.

[IT-MikeS]

Going to need much more detailed testing steps. include install instructions, build/pack instructions, what to expect before and after fix is applied, reproduction repo, etc. These exact commands/examples/reproductions will speed this along.

[MarcusAngel]

Any progress on this... kinda crazy its taken this long

[clicktodev]

Can we get some movement on this please. This is critical because the project I'm working on is a huge monorepo with yarn v3.
Edit: I tested the code and it works by the way.