refactor(WAF): Rename WAF to WAFRegional and Add Global WAF Service

[HugoPBrito]

Context

I identified a misconception in how the AWS WAF services and clients were referenced and utilized across our services. Specifically, AWS WAFRegional was being referred to as simply WAF, which led to confusion. Additionally, AWS WAF (global) was not represented separately, which could cause potential issues when differentiating between global and regional WAF services.

Description

This PR addresses the following:

• Renaming: The existing WAF service and client have been renamed to WAFRegional to align with AWS’s naming convention for regional WAF services.
• Introducing Global WAF: A new WAF service and client have been introduced to represent AWS WAF (global), ensuring that both regional and global WAF services are distinctly covered.
  This change mirrors the structure used by AWS and is similar approach to how we handleS3 and S3Control services under the same S3 service file with different client files.

Checklist

• Are there new checks included in this PR? No.
  • If so, do we need to update permissions for the provider? No.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Attention: Patch coverage is 89.65517% with 3 lines in your changes missing coverage. Please review.

Project coverage is 89.43%. Comparing base (3c929bd) to head (f3025e0).
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
prowler/providers/aws/services/waf/waf_service.py	87.50%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #5389    +/-   ##
========================================
  Coverage   89.43%   89.43%            
========================================
  Files        1027     1031     +4     
  Lines       31531    31685   +154     
========================================
+ Hits        28200    28338   +138     
- Misses       3331     3347    +16     

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[sergargar]

Good catch!
Please, change the waf client that is used in check elbv2_waf_acl_attached to the new regional one.

[HugoPBrito]

Good catch! Please, change the waf client that is used in check elbv2_waf_acl_attached to the new regional one.

Done! I also updated the new client name to avoid any possible confusions.