feat(users/Profpatsch/whatcd-resolver): add basic otel tracing

For it to work, you need otel (e.g. jaeger) to run on port 4317.

Change-Id: I36f0493b9be26af256769ae5af8916029036a76e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9488
Tested-by: BuildkiteCI
Autosubmit: Profpatsch <mail@profpatsch.de>
Reviewed-by: Profpatsch <mail@profpatsch.de>

users/Profpatsch/shell.nix

@@ -54,6 +54,7 @@ pkgs.mkShell {
       h.postgresql-simple
       h.resource-pool
       h.xmonad-contrib
+      h.hs-opentelemetry-sdk
     ]))
 
     pkgs.rustup