feat: New webhook testing route

[antoinegelloz]

No description provided.

[codecov]

Codecov Report

Merging #40 (96032f4) into main (f9e64ea) will decrease coverage by 0.66%.
The diff coverage is 61.40%.

@@            Coverage Diff             @@
##             main      #40      +/-   ##
==========================================
- Coverage   60.35%   59.69%   -0.67%     
==========================================
  Files          31       32       +1     
  Lines        1062     1099      +37     
==========================================
+ Hits          641      656      +15     
- Misses        337      354      +17     
- Partials       84       89       +5     

Impacted Files	Coverage Δ
cmd/server.go	0.00% <0.00%> (ø)
pkg/server/test.go	37.93% <37.93%> (ø)
pkg/attempt.go	69.81% <82.35%> (-3.11%)	⬇️
pkg/security/security.go	66.66% <100.00%> (ø)
pkg/server/handler.go	100.00% <100.00%> (ø)
pkg/worker/messages/worker.go	66.66% <100.00%> (ø)
pkg/worker/retries/worker.go	65.43% <100.00%> (ø)

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