add support for 2022 custom asset store downloads location

[unitycoder]

in unity 2022 can adjust these folder locations,

https://docs.unity3d.com/2022.2/Documentation/Manual/Preferences.html#package-manager

[unitycoder]

not sure where that value is saved.. didnt find it inside unity registry..

[unitycoder]

some info here, so its related to package manager settings (or optionally using env.variable)
The Preferences window is the recommended method because of its ease and permanence. When you change the package cache location using this method, Unity stores the preference for the current session and future sessions.
The ASSETSTORE_CACHE_PATH environment variable method isn’t permanent, but advanced users might find it preferable in specific use cases.

[unitycoder]

ok its in registry, when modified:
"AssetStoreCacheRootPath_h2408304525"=YOUR_PATH_HERE