KBM - Set up tests for keyboard hook remapping logic (#4004)

* Add test proj, refactor proj with filters, and move single remap function to a separate header

* Moved all methods to header files

* remove more unused commented code

* Reverted sln file

* Fixed sln file

* Added interface wrapping SendInput calls

* fixed formatting

* Created test mock class

* Added keyboard input logic

* Fixed compilation errors and added nuget reference to CppWinRT

* Added tests for single key remapping

* Refactored code for adding shortcut remap tests

* Separated test classes

* Fixed tests in release mode

* Added more tests

* Resolved comments

src/modules/keyboardmanager/common/KeyboardManagerConstants.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <string>
+#include <winrt/base.h>
 
 namespace KeyboardManagerConstants
 {