Add OpenTelemetry tracing with Axiom export via @adonisjs/otel
Instruments all three process entrypoints (web, jetstream, queue worker)
with auto-instrumentation for HTTP and Lucid queries, plus a manual
`record()` span around backfill job execution. Tracing is disabled when
OTEL_EXPORTER_OTLP_ENDPOINT is unset. Each docker-compose service gets
a distinct OTEL_SERVICE_NAME for easy filtering in Axiom/Jaeger.
Also exposes ClickHouse port 8123 in docker-compose.yml for local dev.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>