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/grafana/grafana.ini

@@ -0,0 +1,41 @@
+; https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/#configuration-options
+[server]
+http_port = 3000
+
+; https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/#serve_from_sub_path
+; To enable serving Grafana from a subpath
+serve_from_sub_path = false
+; root_url = http://grafana.localhost:3030/
+
+enable_gzip = true
+
+[analytics]
+reporting_enabled = true
+check_for_updates = true
+check_for_plugin_updates = true
+feedback_links_enabled = false
+
+[security]
+disable_gravatar = false
+
+[users]
+allow_sign_up = false
+allow_org_create = false
+
+[log]
+level = info ; debug, info, warn, error
+
+[explore]
+enabled = true
+[help]
+enabled = true
+[profile]
+enabled = true
+[news]
+news_feed_enabled = false
+
+[public_dashboards]
+enabled = false
+
+
+