Enable broker support on Linux platform

[xinyuxu1026]

Fixes #

Changes proposed in this request

• Add broker support on Linux and WSL platforms
  • Linux platform doesn't require a new one to be registered, it should be able to use the same redirect_uri as Windows platform.
  • For parent window, on Linux we import libX11 to get the window handle, and this applies to both Linux and WSL since they are both Linux environments
  • Linux broker doesn't support POP
• Update msalruntime to version 0.18.0

Testing

• Microsoft.Identity.Test.Integration.NetCore tests are enabled in the CI for Linux platform
• Manual testing: test Msalruntime flow in WSL(Windows Subsystem for Linux)

Performance impact

Documentation

• All relevant documentation is updated.

Copilot reviewed 5 out of 10 changed files in this pull request and generated no comments.

Files not reviewed (5)

• Directory.Packages.props: Language not supported
• NuGet.Config: Language not supported
• src/client/Microsoft.Identity.Client.Broker/Microsoft.Identity.Client.Broker.csproj: Language not supported
• tests/devapps/WAM/NetWSLWam/Properties/launchSettings.json: Language not supported
• tests/devapps/WAM/NetWSLWam/test.csproj: Language not supported

Comments suppressed due to low confidence (2)

src/client/Microsoft.Identity.Client/PlatformsCommon/Shared/DesktopOsHelper.cs:59

• [nitpick] The method name 'IsRunningOnWsl' could be more descriptive. Consider renaming it to 'IsRunningOnWindowsSubsystemForLinux'.

public static bool IsRunningOnWsl()

src/client/Microsoft.Identity.Client.Broker/RuntimeBroker.cs:129

• Replace the debug log statement with a proper logging mechanism: _logger.Info("Runtime Broker AcquireTokenInteractiveAsync");

Console.WriteLine("Runtime Broker AcquireTokenInteractiveAsync");

[gladjohn]

good work @xinyuxu1026, some comments

• few tests have asserts commented out
• really like to understand the CI variables check on product code
• still no dll checks on the pipeline after building the test project
• linux file check may need a exception handler