feat: add support for allow_all_scopes property in clientGrants

[kushalshit27]

🔧 Changes

• Added support for the allow_all_scopes boolean property in Client Grants, which when enabled, allows all scopes configured on the resource server without explicitly listing them
• Add validation between allow_all_scopes and scope properties - when allow_all_scopes is true, the scope array cannot be specified

Examples

YAML format

clientGrants:
  - client_id: "My M2M Application"
    audience: "https://api.example.com"
    allow_all_scopes: true

JSON format (Directory structure)

{
  "client_id": "My M2M Application",
  "audience": "https://api.example.com",
  "allow_all_scopes": true
}

📌 Note:

When allow_all_scopes is set to true, the scope property must not be provided or must be empty

🔬 Testing

• Added 2 validation tests to ensure allow_all_scopes and scope are mutually exclusive and that valid configurations pass validation
• Added process test to verify client grants can be created with allow_all_scopes property

📝 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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.28%. Comparing base (067f99b) to head (beb4108).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1278      +/-   ##
==========================================
+ Coverage   80.26%   80.28%   +0.02%     
==========================================
  Files         146      146              
  Lines        5817     5823       +6     
  Branches     1191     1193       +2     
==========================================
+ Hits         4669     4675       +6     
  Misses        655      655              
  Partials      493      493              

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