[pdata] Deprecate New[Slice|Map]FromRaw functions

[dmitryax]

Use New[Slice|Map]().FromRaw() instead fo consistency with the interface provided by primitive slices.

Link to tracking Issue: #6041

[codecov]

Codecov Report

Base: 91.95% // Head: 91.89% // Decreases project coverage by -0.06% ⚠️

Coverage data is based on head (cc25e1a) compared to base (8b26740).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6045      +/-   ##
==========================================
- Coverage   91.95%   91.89%   -0.07%     
==========================================
  Files         216      216              
  Lines       13390    13411      +21     
==========================================
+ Hits        12313    12324      +11     
- Misses        858      868      +10     
  Partials      219      219              

Impacted Files	Coverage Δ
pdata/pcommon/common.go	95.00% <100.00%> (-1.60%)	⬇️

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[dmitryax]

@bogdandrutu NewMapFromRaw is used pretty extensively for tests in contrib to create map instances inline. This PR introduces significant inconvenience. I'm wondering if we should have some additional helper, or eventually make FromRaw returning the map itself... I'll submit a draft PR in contrib

[dmitryax]

Maybe returning map by FromRaw is ok given that we already return map by Sort