[feat][backend]: trajectory metadata config

[kidkidkid]

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[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 8 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ackend/modules/observability/infra/config/trace.go	0.00%	6 Missing ⚠️
...bservability/domain/trace/service/trace_service.go	71.42%	1 Missing and 1 partial ⚠️

@@            Coverage Diff             @@
##             main     #538      +/-   ##
==========================================
+ Coverage   77.41%   77.42%   +0.01%     
==========================================
  Files         662      662              
  Lines       74864    74909      +45     
==========================================
+ Hits        57956    58001      +45     
- Misses      13487    13490       +3     
+ Partials     3421     3418       -3     

Flag	Coverage Δ
unittests	77.42% <85.71%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...es/observability/domain/component/config/config.go	42.30% <ø> (ø)
...bility/domain/trace/entity/loop_span/trajectory.go	91.51% <100.00%> (+1.19%)	⬆️
...bservability/domain/trace/service/trace_service.go	89.02% <71.42%> (-0.09%)	⬇️
...ackend/modules/observability/infra/config/trace.go	60.78% <0.00%> (-2.49%)	⬇️

... and 3 files with indirect coverage changes

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