plugin.program.sonarr

I have a folder named plugin.program.sonarr with these folders and files inside of it,
folder .git, folder resources, file .gitattributes, file .gitignore, file addon.py, file addon.xml,
file icon.png, file LICENSE.txt.
What I would like to know is how to install this plugin, I have searched on how to do this
with no luck.

Raspberry Pi 2
LibreELEC-RPi2.arm-7.0.3 with Kodi 16.1
Hopefully you or someone can help me?

Thank you in advance
JGN

[email protected] or [email protected]