Add TracesWrapper to dissallow access to internal representation

[bogdandrutu]

Signed-off-by: Bogdan Drutu bogdandrutu@gmail.com

[codecov]

Codecov Report

Merging #2721 (34beafa) into main (43f131a) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2721      +/-   ##
==========================================
- Coverage   91.84%   91.83%   -0.01%     
==========================================
  Files         289      289              
  Lines       15532    15523       -9     
==========================================
- Hits        14265    14256       -9     
  Misses        870      870              
  Partials      397      397              

Impacted Files	Coverage Δ
consumer/pdata/trace.go	100.00% <100.00%> (ø)
exporter/fileexporter/file_exporter.go	76.92% <100.00%> (-3.08%)	⬇️
exporter/otlpexporter/otlp.go	69.01% <100.00%> (-0.85%)	⬇️
internal/goldendataset/traces_generator.go	86.48% <100.00%> (+0.57%)	⬆️
internal/otlp_wrapper.go	100.00% <100.00%> (ø)
receiver/kafkareceiver/otlp_unmarshaller.go	100.00% <100.00%> (ø)
receiver/otlpreceiver/trace/otlp.go	100.00% <100.00%> (ø)

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