enhance: update FaultInjection api

[Eikykun]

No description provided.

[codecov]

Codecov Report

Attention: 60 lines in your changes are missing coverage. Please review.

Comparison is base (59ffd7a) 42.89% compared to head (27692ff) 40.82%.

Files	Patch %	Lines
pkg/proxy/faultinjection/manager.go	44.92%	37 Missing and 1 partial ⚠️
pkg/proxy/faultinjection/injector.go	25.00%	18 Missing ⚠️
pkg/proxy/faultinjection/store.go	87.50%	2 Missing and 1 partial ⚠️
pkg/proxy/grpcserver/faultinject_handler.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #31      +/-   ##
==========================================
- Coverage   42.89%   40.82%   -2.07%     
==========================================
  Files          26       26              
  Lines        2928     2748     -180     
==========================================
- Hits         1256     1122     -134     
+ Misses       1561     1516      -45     
+ Partials      111      110       -1     

Flag	Coverage Δ
unittests	40.82% <50.81%> (-2.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.