feat: msix auto-updater (#49230)

* feat: native auto updater for MSIX on Windows

* doc: added MSIX debug documentation

* fix: allow downgrade with json release file and emit update-available

* test: msix auot-update tests

* doc: API documentation

* test: add package version validation

* fix: docs typo

* fix: don't allow auto-updating when using appinstaller manifest

* fix: getPackageInfo interface implementation

* fix: review feedback, add comment

* fix: missed filename commit

* fix: install test cert on demand

* fix: time stamp mismatch in tests

* fix: feedback - rename to MSIXPackageInfo

* fix: update and reference windowsStore property

* fix: remove getPackagInfo from public API

* fix: type error bcause of removed API

docs/api/environment-variables.md

@@ -159,6 +159,22 @@ Notification activated (com.github.Electron:notification:EAF7B87C-A113-43D7-8E76
 Notification replied to (com.github.Electron:notification:EAF7B87C-A113-43D7-8E76-F88EC9D73D44)
 ```
 
+### `ELECTRON_DEBUG_MSIX_UPDATER`
+
+Adds extra logs to MSIX updater operations on Windows to aid in debugging. Extra logging will be displayed when MSIX update operations are initiated, including package updates, package registration, and restart registration. This helps diagnose issues with MSIX package updates and deployments.
+
+Sample output:
+
+```sh
+UpdateMsix called with URI: https://example.com/app.msix
+DoUpdateMsix: Starting
+Calling AddPackageByUriAsync... URI: https://example.com/app.msix
+Update options - deferRegistration: true, developerMode: false, forceShutdown: false, forceTargetShutdown: false, forceUpdateFromAnyVersion: false
+Waiting for deployment...
+Deployment finished.
+MSIX Deployment completed.
+```
+
 ### `ELECTRON_LOG_ASAR_READS`
 
 When Electron reads from an ASAR file, log the read offset and file path to