Investigate switching to multiplatform-markdown-renderer #1663

Pre-Flight checklist

• Did you check to see if this issue already exists?
• This is a single feature request. (Do not put multiple feature requests in one issue)
• This is not a question or discussion. (Use https://lemmy.ml/c/jerboa for that)

Describe The Feature Request Below

@MV-GH suggested using this library for markdown, in place of markwon, which has stopped development:

https://github.com/mikepenz/multiplatform-markdown-renderer

Context: #1652