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/test/MockedInput.h

@@ -0,0 +1,38 @@
+#pragma once
+#include <keyboardmanager/common/InputInterface.h>
+#include <vector>
+#include <functional>
+#include <interface/lowlevel_keyboard_event_data.h>
+
+// Class for mocked keyboard input
+class MockedInput :
+    public InputInterface
+{
+private:
+    // Stores the states for all the keys - false for key up, and true for key down
+    std::vector<bool> keyboardState;
+
+    // Function to be executed as a low level hook. By default it is nullptr so the hook is skipped
+    std::function<intptr_t(LowlevelKeyboardEvent*)> hookProc;
+
+public:
+    MockedInput()
+    {
+        keyboardState.resize(256, false);
+    }
+
+    // Set the keyboard hook procedure to be tested
+    void SetHookProc(std::function<intptr_t(LowlevelKeyboardEvent*)> hookProcedure);
+
+    // Function to simulate keyboard input
+    UINT SendVirtualInput(UINT cInputs, LPINPUT pInputs, int cbSize);
+
+    // Function to simulate keyboard hook behavior
+    intptr_t MockedKeyboardHook(LowlevelKeyboardEvent* data);
+
+    // Function to get the state of a particular key
+    bool GetVirtualKeyState(int key);
+
+    // Function to reset the mocked keyboard state
+    void ResetKeyboardState();
+};