[refactor] Move internal TracesData type to package jptrace

[mahadzaryab1]

Which problem is this PR solving?

• Towards Implement GRPC Client For Interacting With Remote Storage #6789

Description of the changes

• This PR moves the internal TracesData type to package jptrace so that it can be used by the client for GRPC storage as well.

How was this change tested?

• CI

Checklist

• I have read https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
• I have signed all commits
• I have added unit tests for the new functionality
• I have run lint and test steps successfully
  • for jaeger: make lint test
  • for jaeger-ui: npm run lint and npm run test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.04%. Comparing base (a048bc8) to head (4d58ba5).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6809      +/-   ##
==========================================
- Coverage   96.06%   96.04%   -0.02%     
==========================================
  Files         364      364              
  Lines       20700    20700              
==========================================
- Hits        19885    19882       -3     
- Misses        622      624       +2     
- Partials      193      194       +1     

Flag	Coverage Δ
badger_v1	9.87% <ø> (-0.04%)	⬇️
badger_v2	1.98% <ø> (ø)
cassandra-4.x-v1-manual	14.89% <ø> (-0.06%)	⬇️
cassandra-4.x-v2-auto	1.97% <ø> (ø)
cassandra-4.x-v2-manual	1.97% <ø> (ø)
cassandra-5.x-v1-manual	14.89% <ø> (-0.06%)	⬇️
cassandra-5.x-v2-auto	1.97% <ø> (ø)
cassandra-5.x-v2-manual	1.97% <ø> (ø)
elasticsearch-6.x-v1	19.20% <ø> (-0.08%)	⬇️
elasticsearch-7.x-v1	19.28% <ø> (-0.08%)	⬇️
elasticsearch-8.x-v1	19.45% <ø> (-0.08%)	⬇️
elasticsearch-8.x-v2	1.98% <ø> (ø)
grpc_v1	10.91% <ø> (-0.05%)	⬇️
grpc_v2	7.95% <ø> (ø)
kafka-3.x-v1	10.17% <ø> (-0.04%)	⬇️
kafka-3.x-v2	1.98% <ø> (ø)
memory_v2	1.98% <ø> (ø)
opensearch-1.x-v1	19.33% <ø> (-0.08%)	⬇️
opensearch-2.x-v1	19.33% <ø> (-0.08%)	⬇️
opensearch-2.x-v2	1.98% <ø> (ø)
tailsampling-processor	0.48% <ø> (ø)
unittests	94.93% <100.00%> (-0.02%)	⬇️

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