[pdata] Extract model/internal/pdata package into model/internal

[dmitryax]

To avoid confusion with model/pdata package and pdata module which we will likely have instead of model based on the latest discussion in #5087

[codecov]

Codecov Report

Merging #5162 (1fd26e4) into main (a1c539a) will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #5162      +/-   ##
==========================================
+ Coverage   90.33%   90.37%   +0.03%     
==========================================
  Files         182      182              
  Lines       11000    11000              
==========================================
+ Hits         9937     9941       +4     
+ Misses        837      834       -3     
+ Partials      226      225       -1     

Impacted Files	Coverage Δ
model/internal/common.go	95.06% <ø> (ø)
model/internal/generated_common.go	100.00% <ø> (ø)
model/internal/generated_log.go	96.65% <ø> (ø)
model/internal/generated_metrics.go	97.21% <ø> (ø)
model/internal/generated_resource.go	100.00% <ø> (ø)
model/internal/generated_trace.go	96.89% <ø> (ø)
model/internal/logs.go	81.48% <ø> (ø)
model/internal/metrics.go	87.37% <ø> (ø)
model/internal/otlp_wrapper.go	100.00% <ø> (ø)
model/internal/spanid.go	100.00% <ø> (ø)
... and 11 more

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[bogdandrutu]

this is an internal only change +1

[bogdandrutu]

I think we may have an issue, because I remember I asked you to do this to remove the confusion between the current public vs internal package.

[dmitryax]

I think we may have an issue, because I remember I asked you to do this to remove the confusion between the current public vs internal package.

What issue do you mean? Yes I remember that you asked this, but I thought I would not be needed anymore if we have model/p<signal>