Packaging status badge in README

[olemis]

Is your feature request related to a problem? Please describe.
There's no way to easily know what package managers can be used to install wallet software

Describe the solution you'd like
Add a badge in README file

Describe alternatives you've considered
A wiki page could be of help in case extraordinary circumstances need be documented.

Additional context
For a wiki page to take as a reference see git-filter-repo's INSTALL.md, which led to creating this issue. Badge looks like this

It's powered by Repology , and details page look like this.