feat: Add CIMD client registration support and tenant metadata settings

[kushalshit27]

🔧 Changes

• Add CIMD-aware client handling so Deploy CLI can register clients from an external_client_id metadata document instead of treating them like standard clients. This adds schema support for external_client_id, external_metadata_type, external_metadata_created_by, and jwks_uri.
• Extend the tenant handler schema and typing to support client_id_metadata_document_supported and resource_parameter_profile, so these tenant settings can be exported and imported alongside the existing tenant configuration.

Examples

YAML format

CIMD Client:

clients:
  - name: "MCP Tool Server"
    external_client_id: "https://mcpserver.example.com/client.json"
    external_metadata_type: "cimd"
    external_metadata_created_by: "admin"
    jwks_uri: "https://mcpserver.example.com/jwks.json"
    description: "editable after registration"

Tenant:

tenant:
  client_id_metadata_document_supported: true
  resource_parameter_profile: "compatibility"

JSON format

CIMD Client:

{
  "name": "MCP Tool Server",
  "external_client_id": "https://mcpserver.example.com/client.json",
  "external_metadata_type": "cimd",
  "external_metadata_created_by": "admin",
  "jwks_uri": "https://mcpserver.example.com/jwks.json",
  "description": "editable after registration"
}

Tenant:

{
  "client_id_metadata_document_supported": true,
  "resource_parameter_profile": "compatibility"
}

🔬 Testing

• Review the new unit coverage in test/tools/auth0/handlers/clients.tests.js:
  • create a CIMD client through registerCimdClient without issuing a follow-up patch
  • match an existing CIMD client by external_client_id and update only editable fields
  • allow validation when CIMD metadata fields are present
• Review the tenant handler coverage in test/tools/auth0/handlers/tenant.tests.ts to confirm the new tenant settings are preserved on export and included on update.

📝 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 80.64516% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.75%. Comparing base (d68b6da) to head (80b21d0).

Files with missing lines	Patch %	Lines
src/tools/auth0/handlers/clients.ts	80.00%	2 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1369      +/-   ##
==========================================
- Coverage   79.75%   79.75%   -0.01%     
==========================================
  Files         153      153              
  Lines        6969     6998      +29     
  Branches     1525     1530       +5     
==========================================
+ Hits         5558     5581      +23     
- Misses        781      783       +2     
- Partials      630      634       +4     

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