add pytorch profiler codeowner

[guotuofeng]

What does this PR do?

Add @guotuofeng @nbcsm as the code owner for the PyTorch Profiler within Lightning.

Note for reviewer: They maintain the Kineto PyTorch Profiler.

Does your PR introduce any breaking changes? If yes, please list them.

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[tchaton]

LGTM ! Thanks for adding yourselves :)

[codecov]

Codecov Report

Merging #9479 (322fe7f) into master (f949a22) will decrease coverage by 4%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #9479    +/-   ##
=======================================
- Coverage      93%     89%    -4%     
=======================================
  Files         180     180            
  Lines       15064   15064            
=======================================
- Hits        13984   13371   -613     
- Misses       1080    1693   +613