Add observability stack with Grafana, Prometheus, Loki, and cAdvisor

- Introduced a new Grafana dashboard for monitoring Docker containers using cAdvisor.
- Created provisioning files for Grafana dashboards and data sources.
- Added Dockerfiles and configuration files for Loki and Prometheus.
- Implemented a Docker Compose stack for the observability services.
- Configured Traefik as a reverse proxy for the services with appropriate routing.
- Added scripts for SSH tunneling to access the telemetry dashboard.
- Included secrets management for Grafana admin credentials.

observability/prometheus/Dockerfile

@@ -0,0 +1,13 @@
+
+# https://github.com/prometheus/prometheus/releases
+FROM prom/prometheus:latest
+
+# Copy Prometheus configuration
+COPY prometheus.yaml /etc/prometheus/prometheus.yaml
+
+# Switch to default user and expose port
+EXPOSE 9090
+
+# Start Prometheus with the provided configuration file
+ENTRYPOINT ["prometheus"]
+CMD ["--config.file=/etc/prometheus/prometheus.yaml", "--storage.tsdb.path=/prometheus"]