[Feature request] Add option to set download folder for temp files

I'll repost my previously posted feedback from here
https://feedback.unity3d.com/suggestions/unity-hub-add-option-to-set-download-folder-for-temp-files

Unity Hub is really cool, I can easily add/remove new Unity versions and add/remove their components. But every time I want to install even most basic version (without docs, standard assets etc.) it just shows this
https://i.imgur.com/jBeAPGd.png
(for those who can't see it)
"Not enough space
There is not enough space to download and to install the selected items"

I have small RAM disk (512MB) dedicated to temp files, and I had set %TMP/%TEMP env var's to point to that place and it's working good (almost). So I'm guessing that UnityHub reads that env var and checks if there is enough space here for downloaded binaries (that's almost 1GB+) if not it shows that message. As a workaround I have to delete that RAM disk and create next bigger one, then Untity Hub works correctly.

Standalone installers of engine has that option so why not in include it in UnityHub.

How to reproduce
1. Install Unity Hub
2. Set %TMP/%TEMP to partition that have less space than installer files weights
3. Try to install any version of Unity using Unity Hub
4. It can't because of not enough space and displays appropriate message

errata
That would be useful for users of SSD drives