Add Grafana dashboard to docs

docs/config.md

@@ -1121,6 +1121,13 @@ doing, and/or secure access to the endpoint in your reverse proxy.
     metrics-listen-http: "10.0.1.1:9090"
     ```
 
+Here's an example Grafana dashboard built from the metrics (see [Grafana JSON on GitHub](https://raw.githubusercontent.com/binwiederhier/ntfy/main/examples/grafana-dashboard/ntfy-grafana.json)):
+
+<figure markdown style="padding-left: 50px; padding-right: 50px">
+  <a href="../../static/img/grafana-dashboard.png" target="_blank"><img src="../../static/img/grafana-dashboard.png"/></a>
+  <figcaption>ntfy Grafana dashboard</figcaption>
+</figure>
+
 ## Logging & debugging
 By default, ntfy logs to the console (stderr), with an `info` log level, and in a human-readable text format.
 

docs/integrations.md

@@ -131,6 +131,7 @@ and uptime of third party servers, so use of each server is **at your own discre
 - [UnifiedPush: a decentralized, open-source push notification protocol](https://f-droid.org/en/2022/12/18/unifiedpush.html) ⭐ - 12/2022
 - [ntfy setup instructions](https://docs.benjamin-altpeter.de/network/vms/1001029-ntfy/) - benjamin-altpeter.de - 12/2022
 - [Ntfy Self-Hosted Push Notifications](https://lachlanlife.net/posts/2022-12-ntfy/) - lachlanlife.net - 12/2022 
+- [NTFY - système de notification hyper simple et complet](https://www.youtube.com/watch?v=UieZYWVVgA4) - youtube.com - 12/2022
 - [ntfy.sh](https://paramdeo.com/til/ntfy-sh) - paramdeo.com - 11/2022
 - [Using ntfy to warn me when my computer is discharging](https://ulysseszh.github.io/programming/2022/11/28/ntfy-warn-discharge.html) - ulysseszh.github.io - 11/2022
 - [ntfy - Push Notification Service](https://dizzytech.de/posts/ntfy/) - dizzytech.de - 11/2022