Add CODEOWNERS - 2.4

[lucacome]

Adds CODEOWNERS to the 2.4 release branch

[codecov-commenter]

Codecov Report

Merging #3177 (47c32a3) into release-2.4 (c9ea1e5) will increase coverage by 0.10%.
The diff coverage is 61.60%.

❗ Current head 47c32a3 differs from pull request most recent head be219b5. Consider uploading reports for the commit be219b5 to get more accurate results

@@               Coverage Diff               @@
##           release-2.4    #3177      +/-   ##
===============================================
+ Coverage        52.41%   52.52%   +0.10%     
===============================================
  Files               58       58              
  Lines            15997    16069      +72     
===============================================
+ Hits              8385     8440      +55     
- Misses            7336     7351      +15     
- Partials           276      278       +2     

Impacted Files	Coverage Δ
internal/k8s/task_queue.go	0.00% <0.00%> (ø)
internal/nginx/manager.go	0.00% <0.00%> (ø)
internal/nginx/utils.go	0.00% <0.00%> (ø)
internal/k8s/controller.go	10.95% <8.82%> (-0.05%)	⬇️
internal/k8s/status.go	33.27% <20.00%> (ø)
...k8s/appprotectdos/app_protect_dos_configuration.go	94.56% <100.00%> (+0.31%)	⬆️
internal/k8s/handlers.go	6.83% <100.00%> (ø)
internal/k8s/validation.go	93.81% <100.00%> (+0.49%)	⬆️
pkg/apis/dos/validation/dos.go	94.54% <100.00%> (+0.54%)	⬆️
internal/k8s/configuration.go	95.39% <0.00%> (-0.37%)	⬇️
... and 1 more

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