Plugins and packages

[Medicineman25]

Could we add some basic walkthrough info on using plugins? Took a little while to find how to add a community repo, the answer of which was found on reddit of all places. Not great.

Also took a bit to find plugins buried in the firmware section. The page for community plugins could redirect towards plugins page to give a basic usage summary and the plugins that have been upstreamed need to be removed from that documentation.

A good on usage instructions start might be the blurb on the community plugins github.