feat: Add NetEvolve.HealthChecks.Azure.KeyVault

[Copilot]

• Create src/NetEvolve.HealthChecks.Azure.KeyVault/ project
• Add Azure.Security.KeyVault.Secrets 4.7.0 and AzureKeyVaultEmulator.TestContainers 2.3.3 to Directory.Packages.props
• Add project to HealthChecks.slnx
• Add unit tests to tests/NetEvolve.HealthChecks.Tests.Unit/Azure.KeyVault/
• Add integration tests to tests/NetEvolve.HealthChecks.Tests.Integration/Azure.KeyVault/
• Update unit and integration test .csproj files with new project references
• Fix CI: add missing .testgroup file (Z02TestGroup) required by Collect-TestProjects.ps1
• Fix CI: reformat 11 files with CSharpier to pass code formatting check

Original prompt

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This section details on the original issue you should resolve

<issue_title>NetEvolve.HealthChecks.Azure.KeyVault</issue_title>
<issue_description>### Project Name

Azure.KeyVault

Project Description

Health check for Azure Key Vault.

TestContainer Package Required?

Yes

TestContainer Package Name

AzureKeyVaultEmulator.TestContainers

Required NuGet Dependencies

Azure.Identity
Azure.Security.KeyVault.Secrets

Validation Steps

• Create project structure in src/NetEvolve.HealthChecks.<ProjectName>/
• Follow naming conventions from decision documentation
• Include a clear README.md describing the project purpose
• Restore NuGet packages (dotnet restore)
• Build the solution (dotnet build --no-restore)
• Add unit tests to tests/NetEvolve.HealthChecks.Tests.Unit/<ProjectName>/ folder
• Add integration tests to tests/NetEvolve.HealthChecks.Tests.Integration/<ProjectName>/ folder
• Run project-specific tests (dotnet test --filter FullyQualifiedName~<ProjectName>)
• Verify all tests pass successfully

Additional Notes

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

Custom agent used: C# Expert
An agent designed to assist with software development tasks for .NET projects.

• Fixes NetEvolve.HealthChecks.Azure.KeyVault #972

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[samtrion]

@copilot Fix issues found in the pipeline

[Copilot]

@copilot Fix issues found in the pipeline

Fixed in commit 6d9435a. Two issues were causing the pipeline failures:

1. Missing .testgroup file — Collect-TestProjects.ps1 requires a .testgroup file in every integration test subdirectory. Added tests/NetEvolve.HealthChecks.Tests.Integration/Azure.KeyVault/.testgroup with content Z02TestGroup.

2. CSharpier formatting violations — 5 files had formatting that didn't match the project's CSharpier style (constructor parameters, lambda bodies, generic type formatting). Ran csharpier format across all new files to fix them.