Add detection for PHP language

[marctc]

• Added support to detect PHP services. Simply checks that PHP is in the path of executable.
• Update semconv in svc.go to use semconv for Rust

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.34%. Comparing base (b3ed5a5) to head (b8e766c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #970      +/-   ##
==========================================
+ Coverage   80.26%   80.34%   +0.08%     
==========================================
  Files         134      134              
  Lines       10554    10563       +9     
==========================================
+ Hits         8471     8487      +16     
+ Misses       1575     1571       -4     
+ Partials      508      505       -3     

Flag	Coverage Δ
integration-test	55.87% <100.00%> (+0.17%)	⬆️
k8s-integration-test	58.84% <15.38%> (-0.10%)	⬇️
oats-test	35.94% <15.38%> (-0.04%)	⬇️
unittests	48.79% <30.76%> (-0.04%)	⬇️

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