1 - Add the following to Packages/manifest.json:

"com.cysharp.unitask": "https://github.com/Cysharp/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask",
"com.neuecc.unirx": "https://github.com/neuecc/UniRx.git?path=Assets/Plugins/UniRx/Scripts",
"com.naudio.core": "https://github.com/mochi-neko/simple-audio-codec-unity.git?path=/Assets/NAudio/NAudio.Core#0.2.0",
"com.unity.logging": "1.2.3",

2 - Restart the editor