Add Telemetry

[cpursley]

See for ideas: https://hexdocs.pm/quantum/telemetry.html#content

[cpursley]

Borrow ideas from realtime: https://github.com/supabase/realtime/blob/main/lib/realtime/telemetry/logger.ex

[cpursley]

https://github.com/Logflare/logflare/blob/main/lib/logflare/cache_buster.ex#L25

https://blog.appsignal.com/2024/01/23/build-a-simple-tracing-system-in-elixir.html