Add LogLevel & LogFormat flags

[AlexFenlon]

Proposed changes

• added LogLevel parameter to Ingress Controller
• added LogFormat parameter to Ingress Controller
• refactored logLevel in helm chart
• deprecated glog -v= format
• added tests for LogFormat and LogLevel
• initiated the log handler requred for structured logs in preperation for future work
• glog is set as default for logFormat to keep consistancy until glog is fully replaced

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

[codecov]

Codecov Report

Attention: Patch coverage is 64.70588% with 12 lines in your changes missing coverage. Please review.

Project coverage is 53.36%. Comparing base (3d3284f) to head (f689e48).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/nginx-ingress/flags.go	46.66%	8 Missing ⚠️
cmd/nginx-ingress/main.go	78.94%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6520      +/-   ##
==========================================
+ Coverage   53.30%   53.36%   +0.05%     
==========================================
  Files          87       87              
  Lines       16074    16104      +30     
==========================================
+ Hits         8569     8594      +25     
- Misses       7097     7102       +5     
  Partials      408      408              

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[pdabelf5]

Do we need docs updates for log-level & log-format parameters

[github-actions]

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[jjngx]

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