Give spaces support for an html homepage like community's have or make a tool for customizing spaces

### Your use case

Html homepages like the one's that community's have in element, are very valuable feature. In addition to a description, they can give more essential info about the space and will make spaces more appealing and functional for workgroups, online community's,...

### Have you considered any alternatives?

Solve this with a mix of rich formatting tools

### Additional context

I also would like to see more permitted space for html code or text in the homepage, than you have now in community's. More html pages per space together with support for more content-features could make spaces richer. (for example integration of dsplay widgets, responsive widgets, a forum page within a space)

No files, tests, or entry points are identified. Begin by reviewing how Spaces and community homepages currently support descriptions and rich formatting, then clarify whether the goal is HTML support, a customization tool, or multiple pages before defining acceptance criteria.

Written by the indexing model from the issue text.