Add platform to Sample

[lkeegan]

• also remove some console logging output
• resolves add database fields #58

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.11%. Comparing base (d166efb) to head (9b11eb3).

Files with missing lines	Patch %	Lines
backend/src/predicTCR_server/app.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #68      +/-   ##
==========================================
- Coverage   78.16%   78.11%   -0.05%     
==========================================
  Files           8        8              
  Lines         719      722       +3     
==========================================
+ Hits          562      564       +2     
- Misses        157      158       +1     

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