For non-burger users of OVR Toolkit there is a way to make custom keyboard layouts:
http://wiki.ovrtoolkit.co.uk/index.php?title=Keyboard

Only problem is that until the dev adds a downloader you need to get custom layouts from their >discord. Here are some of them:
UK and CZ: https://drive.google.com/drive/folders/1hXfrHretpMUXo5hZGJvN7MRrNFMd7PAe
GER: https://files.catbox.moe/21vo4d.zip
FIN: https://drive.google.com/drive/folders/1ndD0UaMeSpqr_oScpFz6GaCLZGHyTGRZ
RU: https://drive.google.com/drive/folders/19P8bbfTqQAcr_5yWaLSC78MVsDStAN0H