Fully.
You need to first buy the Virtual Desktop app from within your Oculus Quest -- BUT DON'T INSTALL IT. This is only needed to give you a license.
Next, turn on the ability to side load apps (apk formatted) via the Oculus mobile app (you may need to apply for a developer account, which is free and takes seconds).
Then, using a Windows program called sidequest, you can install the custom version of Virtual Desktop to play your steam library over your quest.
Turning on the ability to sideload apps (install things from outside the store):
If you want to find and install unique VR apps that aren’t available on the Oculus Store, or you want to use regular 2D Android apps like Amazon Prime Video and Steam Link, this guide explains how to achieve both. You’ll need a Windows computer with a USB
uploadvr.com
Instructions for setting up sidequest is here:
A open app store for mobile android based VR devices such as the Oculus Go, Oculus Quest or other android based devices. - the-expanse/SideQuest
github.com
Get the custom Virtual Desktop apk from here:
Connect wirelessly to your computer(s) to watch movies, browse the web, play games on a giant virtual screen or stream PCVR games. Virtual Desktop is a highly optimized, native application develope...
github.com
The windows streaming client here:
If you have a good 5ghz router, this will absolutely be worth it.