Draft: Enable hard delete by param

[Alva8756]

It looks like we already support hard-delete but it's disabled by default.

Maybe we can use param to enable hard-delete. Existing behavior remain unchanged if there is no param.

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (9089164) 72.72% compared to head (e61bfc2) 72.70%.

Files	Patch %	Lines
pkg/api/v1/server_service.go	0.00%	2 Missing ⚠️
pkg/api/v1/router_server.go	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #251      +/-   ##
==========================================
- Coverage   72.72%   72.70%   -0.03%     
==========================================
  Files          38       38              
  Lines        3733     3737       +4     
==========================================
+ Hits         2715     2717       +2     
- Misses        760      762       +2     
  Partials      258      258              

Flag	Coverage Δ
unittests	72.70% <40.00%> (-0.03%)	⬇️

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