feat(security): add ASP.NET Core Authorization Policy Support for Debug Endpoints

[georgidhristov]

Closes #96

Summary

Add support for protecting DebugProbe UI and API endpoints using ASP.NET Core authorization policies.

Changes

• Added AuthorizationPolicy option to DebugProbeOptions
• Added app.UseDebugProbe(options => { ... }) configuration support
• Applied authorization policies to DebugProbe endpoints when configured
• Added default ignored probe paths:
  • /health
  • /healthz
  • /ready
  • /live
• Updated documentation and security guidance
• Added automated tests for authorization and default ignore behavior

Protected Endpoints

• /debug
• /debug/{id}
• /debug/json/{id}
• /debug/clear
• /debug/environment
• /debug/compare/{id}
• /compare
• /debug/js/*
• /debug/logo.png
• /debug/favicon.ico

Example

app.UseDebugProbe(options =>
{
    options.AuthorizationPolicy = "DebugProbePolicy";
});

Validation

• All tests passing (49/49)
• Authorization policy behavior covered by automated tests
• Default health endpoint exclusions verified by tests