Packaging status badge in README

**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](https://github.com/newren/git-filter-repo/blob/main/INSTALL.md), which led to creating this issue. Badge looks like this


It's powered by [Repology](https://repology.org/) , and details page look like [this](https://repology.org/project/git-filter-repo/versions).