Navidrome doc (#1379)

* Add Navidrome pages

* Update app_navidrome_fr.md

* Update app_navidrome_fr.md

* Update app_navidrome.md

app_navidrome.md

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+# <img src="/images/navidrome_logo.png" height="80px" alt="Navidrome's logo"> Navidrome
+
+[![Install Navidrome with YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=navidrome) [![Integration level](https://dash.yunohost.org/integration/navidrome.svg)](https://dash.yunohost.org/appci/app/navidrome)
+
+### Index
+
+- [Useful links](#useful-links)
+
+Navidrome is an open source web-based music collection server and streamer. It gives you freedom to listen to your music collection from any browser or mobile device. It's like your personal Spotify!
+
+## Useful links
+
++ Website: [navidrome.org](https://www.navidrome.org/)
++ Application software repository: [github.com - YunoHost-Apps/navidrome](https://github.com/YunoHost-Apps/navidrome_ynh)
++ Fix a bug or an improvement by creating a ticket (issue): [github.com - YunoHost-Apps/navidrome/issues](https://github.com/YunoHost-Apps/navidrome_ynh/issues)

app_navidrome_fr.md

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+# <img src="/images/navidrome_logo.png" height="80px" alt="logo de Navidrome"> Navidrome
+
+[![Install Navidrome with YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=navidrome) [![Integration level](https://dash.yunohost.org/integration/navidrome.svg)](https://dash.yunohost.org/appci/app/navidrome)
+
+### Index
+
+- [Liens utiles](#liens-utiles)
+
+Navidrome est un serveur et un streamer de collection de musique en ligne open source. Il vous donne la liberté d'écouter votre collection de musique à partir de n'importe quel navigateur ou appareil mobile. C'est comme votre Spotify personnel !
+
+## Liens utiles
+
++ Site web : [navidrome.org (en)](https://www.navidrome.org/)
++ Dépôt logiciel de l'application : [github.com - YunoHost-Apps/navidrome](https://github.com/YunoHost-Apps/navidrome_ynh)
++ Remonter un bug ou une amélioration en créant un ticket (issue) : [github.com - YunoHost-Apps/navidrome/issues](https://github.com/YunoHost-Apps/navidrome_ynh/issues)