Dashboard to have a Overview of the Fail2Ban logs collected via Promtail/Loki

Visualizes speedtest results from the netzbremse-measurement tool (https://github.com/AKVorrat/netzbremse-measurement) by AKVorrat. Shows download/upload speed, latency, and jitter over time. Requires Loki and Grafana Alloy see the repository for the Alloy configuration and setup instructions.