The name is OpenLara (https://github.com/XProger/OpenLara ) and you can try out the WebGL build directly on your web browser on: http://xproger.info/projects/OpenLara/ . The web version works amazingly well on my Pixel 7a with touch controls (you have to click on the “go fullscreen” button) using Firefox as a browser.
“PWAs” are still less efficient than native apps. There are many disadvantages - and one advantage (“it’s easy to make one”).