Add crash dump callback

[kvega005]

Summary of the Pull Request

Allows users to specify a callback that gets invoked after a crash dump is successfully written.

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

Adds crash dump callback support for WSLC sessions so SDK callers can be notified after a Linux crash dump is written.

Changes:

• Adds ICrashDumpCallback to the WSLC COM IDL and wires it through session settings into WSLCVirtualMachine.
• Adds public SDK callback types and WslcSetSessionSettingsCrashDumpCallback.
• Adds crash dump callback tests for both WSLC COM/session behavior and the C SDK wrapper.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/windows/service/inc/wslc.idl	Defines the new COM callback interface and adds callback fields to session settings.
src/windows/service/exe/WSLCSessionManager.cpp	Passes crash dump callback settings into per-user session initialization.
src/windows/wslcsession/WSLCVirtualMachine.h	Stores the optional crash dump callback on the VM object.
src/windows/wslcsession/WSLCVirtualMachine.cpp	Invokes the callback after writing a crash dump.
src/windows/WslcSDK/wslcsdk.h	Adds public SDK callback types and setter declaration.
src/windows/WslcSDK/wslcsdk.cpp	Creates and retains the COM bridge callback and exposes the new setter.
src/windows/WslcSDK/WslcsdkPrivate.h	Extends internal session settings and session handle state for the callback.
src/windows/WslcSDK/CrashDumpCallback.h	Declares the SDK-to-COM callback bridge.
src/windows/WslcSDK/CrashDumpCallback.cpp	Implements the SDK-to-COM callback bridge.
src/windows/WslcSDK/CMakeLists.txt	Adds the new callback bridge files to the SDK build.
src/windows/WslcSDK/wslcsdk.def	Exports the new callback setter.
msipackage/package.wix.in	Registers the new COM interface proxy/stub.
test/windows/WSLCTests.cpp	Adds COM-level crash dump callback validation.
test/windows/WslcSdkTests.cpp	Adds SDK-level crash dump callback validation.