feat: Added OpenTelemetry tracing

[bstasyszyn]

No description provided.

[codecov]

Codecov Report

Patch coverage: 88.13% and project coverage change: +0.03 🎉

Comparison is base (53b859e) 88.02% compared to head (082a433) 88.06%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1537      +/-   ##
==========================================
+ Coverage   88.02%   88.06%   +0.03%     
==========================================
  Files         223      226       +3     
  Lines       20773    21075     +302     
==========================================
+ Hits        18286    18559     +273     
- Misses       1589     1613      +24     
- Partials      898      903       +5     

Impacted Files	Coverage Δ
cmd/orb-driver/startcmd/start.go	51.88% <0.00%> (+2.33%)	⬆️
internal/pkg/log/fields.go	98.70% <0.00%> (-0.65%)	⬇️
pkg/anchor/handler/credential/handler.go	77.77% <28.57%> (-1.27%)	⬇️
pkg/httpserver/server.go	62.65% <42.85%> (-17.35%)	⬇️
cmd/orb-server/startcmd/start.go	66.76% <66.66%> (-0.21%)	⬇️
pkg/context/opqueue/opqueue.go	81.60% <86.36%> (+0.45%)	⬆️
pkg/observability/tracing/tracing.go	90.47% <90.47%> (ø)
cmd/orb-server/startcmd/params.go	82.50% <92.30%> (+0.26%)	⬆️
pkg/activitypub/service/outbox/outbox.go	91.07% <94.11%> (+0.60%)	⬆️
pkg/observer/pubsub.go	93.06% <94.11%> (+0.21%)	⬆️
... and 14 more

... and 1 file with indirect coverage changes

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