Add .NET 10 as a build target and update test matrix

[Copilot]

Adds .NET 10 (net10.0) support across all projects and CI pipelines.

Project Files

• Added net10.0 to TargetFrameworks in all 7 .csproj files
• Library projects retain netstandard2.1 for backward compatibility

CI Pipeline

• Updated dotnetVersions array in both appinspector-pr.yml and appinspector-release.yml to include 10.0.x
• Updated build framework variables (DotnetVersion to 10.0.x and DotnetTargetFramework to net10.0) in both pipeline files

<!-- Before -->
<TargetFrameworks>net8.0;net9.0</TargetFrameworks>

<!-- After -->
<TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>

Original prompt

Add .NET 10 as a build target alongside existing supported frameworks, ensure that test matrix runs the .NET 10 tests.

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[gfs]

@copilot please also update the build framework variables in the pipelines.

[Copilot]

@copilot please also update the build framework variables in the pipelines.

Updated DotnetVersion to 10.0.x and DotnetTargetFramework to net10.0 in both appinspector-pr.yml and appinspector-release.yml. See commit dbc6f8c.

[gfs]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[gfs]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).