feat: Add supplemental signals configuration for Akamai integration (EA)

[ramya18101]

🔧 Changes

Adds support for the supplemental signals endpoint, enabling configuration of third-party security integrations (Akamai)
Document the new resource with YAML and directory examples and seed sample configs in examples/.

Examples

YAML format

supplementalSignals:
      akamai_enabled: false

JSON format

Configuration:

{
  "akamai_enabled": true
}

📚 References

https://auth0.com/docs/api/management/v2/supplemental-signals/get-supplemental-signals
https://auth0.com/docs/api/management/v2/supplemental-signals/patch-supplemental-signals

🔬 Testing

• Unit tests Added

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 77.08333% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.15%. Comparing base (4d09409) to head (f3dcd28).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/tools/auth0/handlers/supplementalSignals.ts	65.38%	8 Missing and 1 partial ⚠️
.../context/directory/handlers/supplementalSignals.ts	85.71%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1310      +/-   ##
==========================================
- Coverage   80.17%   80.15%   -0.03%     
==========================================
  Files         149      152       +3     
  Lines        6048     6096      +48     
  Branches     1237     1245       +8     
==========================================
+ Hits         4849     4886      +37     
- Misses        685      693       +8     
- Partials      514      517       +3     

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