Add make target for running staticcheck locally

[jjngx]

Proposed changes

This PR adds a make target staticcheck that runs staticcheck linter locally.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[lucacome]

golangci-lint is already running staticcheck, what is the difference with this?

[jjngx]

golangci-lint is already running staticcheck, what is the difference with this?

staticcheck in golangci-lint is a subset of checks implemented by staticcheck project (binary). more info here

[codecov-commenter]

Codecov Report

Merging #3110 (8b048ed) into main (af95533) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #3110      +/-   ##
==========================================
- Coverage   52.56%   52.54%   -0.02%     
==========================================
  Files          58       58              
  Lines       16069    16069              
==========================================
- Hits         8446     8444       -2     
- Misses       7347     7349       +2     
  Partials      276      276              

Impacted Files	Coverage Δ
...ternal/k8s/appprotect/app_protect_configuration.go	86.16% <0.00%> (-0.58%)	⬇️

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