Add otel4s

Author: rossabaker

_data/incubator.yml

@@ -55,6 +55,9 @@
 - title: "log4cats"
   description: "Logging Tools For Interaction with cats-effect"
   github: "https://github.com/typelevel/log4cats"
+- title: "otel4s"
+  description: "An OpenTelemetry library based on cats-effect"
+  github: "https://github.com/typelevel/otel4s"  
 - title: "Outwatch"
   description: "The Functional and Reactive Web-Frontend Library for Scala.js"
   github: "https://github.com/outwatch/outwatch"