Intent of folder should be recognized as agent files|occurrence=1

All 1 exact test in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 1 test
- workbench/ 1 test
  - contrib/ 1 test
    
    chat/ 1 test
    
    test/ 1 test
    
    common/ 1 test
    
    promptSyntax/ 1 test
    
    config/ 1 test
    
    promptFileLocations.test|title=promptFileLocations getPromptFileType .md files in ~/ 1 test
    
    .copilot/ 1 test
    
    agents/ 1 test
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/chat/test/common/promptSyntax/config/promptFileLocations.test|title=promptFileLocations getPromptFileType .md files in ~/.copilot/agents/ folder should be recognized as agent files|occurrence=1 Introduced here