I’m willing to pay $50AUD (Australian dollars or dollarbucks if you watch Bluey) to anyone who implements this. Falkon already has this, so perhaps utilising their code and/or improving on it.
There is potentially an extra $50AUD available if it can be synchronised between devices easily. Whether that is via Nextcloud or some account sync service like Firefox has. This feature would need discussion with me before I am willing to commit, so feel free to ping me here or on Matrix (@justin.zobel:kde.org) to discuss.
Edit: Must have a PayPal account to receive the funds.