Add Navidrome service

[aleksej-kuznecow]

Description

Add support of self-hosted music streaming service Navidrome showing availabilite (online or offline), numbers of music folders (aka. collections) and artists and last syncing datetime (or current state of syncing)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring

Checklist:

• I've read & comply with the contributing guidelines
• I have tested my code for new features & regressions on both mobile & desktop devices, using the latest version of major browsers.
• I have made corresponding changes to the documentation (README.md).
• I've checked my modifications for any breaking changes, especially in the config.yml file