Functionality to detect Win32 apps which are installed, deleted or renamed while PowerToys is running (#4960)

* Added file system wrapper and interface

* added win32program repository which would load store app and also handle new apps being added/deleted

* Added event handlers to win32 program repo

* added paths to monitor and setting FSWs for each location

* Events firing as expected

* filter extensions added, events fire as expected

* override gethashcode so that duplicates don't show up. OnCreated and OnDeleted events trigger as expected

* implemented setter for filters in FileSystemWatcher

* Rename adds item but does not seem to delete the previous app

* catching an exception when a duplicate item is inserted

* Removed notify filter for directory because we only need to monitor files

* Added exe programs to be indexed in the desktop and startmenu

* created a new class to init FileSystemHelpers instead of main

* Added fix for shortcut applications to work as expected while renaming and deleting them

* Added wrappers for file system operations

* Added some tests

* Added all tests for appref-ms and added a condition to search in sub directories

* Added tests for Exe applications

* Added lnk app tests

* Added tests for shortcut applications

* removed unnecessary wrappers

* override Equals for win32

* removed debug statements

* Fixed exe issue

* Fixed internet shortcut exception

* fixed renaming shortcut apps

* Added a retry block for ReadAllLines

* capitalized method name - RetrieveTargetPath

* made naming consistent, helper variables start with underscore

* Added the exception condition back

* renamed Win32ProgramRepositoryHelper to Win32ProgramFileSystemWatchers

* made win32Program repository variable static

* changed list to ilist

* disposed file system watchers

* make retrieveTargetPath upper case in tests

src/modules/launcher/Wox.Infrastructure/Storage/IFileSystemWatcherWrapper.cs

@@ -0,0 +1,20 @@
+using System.Collections.ObjectModel;
+using System.IO;
+
+namespace Wox.Infrastructure.Storage
+{
+    public interface IFileSystemWatcherWrapper
+    {
+        // Events to watch out for
+        event FileSystemEventHandler Created;
+        event FileSystemEventHandler Deleted;
+        event RenamedEventHandler Renamed;
+
+        // Properties of File System watcher
+        Collection<string> Filters { get; set; }
+        bool EnableRaisingEvents { get; set; }
+        NotifyFilters NotifyFilter { get; set; }
+        string Path { get; set; }
+        bool IncludeSubdirectories { get; set; }
+    }
+}