Custom page and collective icons

Hello dear Collectives team!

Description

My request is for a little quality-of-life feature in the Collectives app. Since I am transfering my company's whole database to Nextcloud, I find your app very useful for all the documentation lying around there. Therefore I am used to some features which improve the accessability of the internal system I have developed there. One of them is precisely the ability to add custom icons to the Headings of the separate pages/documents. As of now one can only choose out of the set of provided emojis, which as extensive as it is, cannot possibly cover all different use cases. That's why I have been heavily relyong on custom created icons in the names of my documents. This helps the user to easily define what the contents of the page/document are only by visual reference.

Summary

In a nutshell my request is for a possibility to upload custom icons for page and collective titles.

Reference

I am applyin this screenshot from Notion as a visual reference to my request

Thank you in advance for your support!

The issue names no files or tests. Start by locating the page and collective title UI and the existing emoji-selection entry point, then trace how title icons are stored and rendered. Done means users can upload custom icons and see them on page and collective titles.