Incorporate local Signoz

[jamestelfer]

Signoz is more complete than Jaeger, and may provide a better experience for local testing of telemetry (particularly with metrics). It is much chunkier than Jaeger though.

Possibly:

• Add a make script that clones Signoz to a known location
• add a docker compose file that incorporates overrides to us signoz for telemetry, and uses an unused compose profile name to remove some containers from the default startup.
• add a make target that adds the Signoz compose file into the mix

If it doesn't work in one command, use a named network to communicate between the two.