Is your feature request related to a problem? Please describe.
Not really a problem but I was thinking it would be great to get the text from the help file into the autocompletion description popup.
Describe the solution you'd like
I can see there is already a way of converting .schelp files to .txt. Why not have a command like SCNvimTags that converts all help to .txt files and then use these to populate the info for snippets and tags?

Example of this functionality from rust in NeoVim:
