adding scaphandre to observability section

README.md

@@ -273,6 +273,7 @@ See also [Games Made With Piston](https://github.com/PistonDevelopers/piston/wik
 * [timberio/vector](https://github.com/timberio/vector) — A High-Performance, Logs, Metrics, & Events Router.
 * [Mnwa/gtsa](https://github.com/Mnwa/gtsa) — A simple solution to proxy gelf messages (messages for Graylog) to Sentry
 * [OpenTelemetry](https://crates.io/crates/opentelemetry) — OpenTelemetry provides a single set of APIs, libraries, agents, and collector services to capture distributed traces and metrics from your application. You can analyze them using Prometheus, Jaeger, and other observability tools. [![GitHub Actions CI](https://github.com/open-telemetry/opentelemetry-rust/workflows/CI/badge.svg?branch=master)](https://github.com/open-telemetry/opentelemetry-rust/actions?query=workflow%3ACI+branch%3Amaster)
+* [Scaphandre](https://github.com/hubblo-org/scaphandre) - A power consumption monitoring agent, to track host and each service power consumption and enable designing systems and applications for more sustainability. Designed to fit any monitoring toolchain (already supports prometheus, warp10, riemann...).
 
 ### Operating systems