[Launcher] Use a keyboard hook in the runner to invoke the Launcher (#6660)

* Added a keyboard hook to the runner

* Update RootKeyboardHook

* Enable reading the whole JsonObject property

* Renamed RootKeyboardHook to CentralizedKeyboardHook

* Fixed build break, changed callback return type to bool

* Added Hotkey struct which somehow went missing

+ Cherry-pick fixes

* Reorganized the kb hook

* Basic version works

* Various fixes

* Finishing touches

* Fix potential threading issue

* int -> size_t

* Add default initializers to the Hotkey struct

* Added a suggested comment

* Unified a constant

* Use C# classes instead of native calls for sync

* Added a claryfing comment

* Use std::move

* Renamed a method

* Possible fix for compilation errors

* Fix a regression

* Show a message on failure

* Added DISABLE_LOWLEVEL_HOOK support

* Allow running Launcher as standalone

* Rename string constants

src/common/interop/interop.h

@@ -127,5 +127,10 @@ public
     {
     public:
         literal int VK_WIN_BOTH = CommonSharedConstants::VK_WIN_BOTH;
+        
+        static String^ PowerLauncherSharedEvent()
+        {
+            return gcnew String(CommonSharedConstants::POWER_LAUNCHER_SHARED_EVENT);
+        }
     };
 }

src/common/settings_objects.cpp

@@ -343,6 +343,11 @@ namespace PowerToysSettings
         return m_json.GetNamedObject(L"properties").GetNamedObject(property_name).GetNamedObject(L"value");
     }
 
+    json::JsonObject PowerToyValues::get_raw_json()
+    {
+        return m_json;
+    }
+
     std::wstring PowerToyValues::serialize()
     {
         set_version();

src/common/settings_objects.h

@@ -83,6 +83,7 @@ namespace PowerToysSettings
         std::optional<int> get_int_value(std::wstring_view property_name);
         std::optional<std::wstring> get_string_value(std::wstring_view property_name);
         std::optional<json::JsonObject> get_json(std::wstring_view property_name);
+        json::JsonObject get_raw_json();
 
         std::wstring serialize();
         void save_to_settings_file();

src/common/shared_constants.h

@@ -8,4 +8,7 @@ namespace CommonSharedConstants
 
     // Fake key code to represent VK_WIN.
     inline const DWORD VK_WIN_BOTH = 0x104;
-}
+
+    // Path to the event used by PowerLauncher
+    const wchar_t POWER_LAUNCHER_SHARED_EVENT[] = L"Local\\PowerToysRunInvokeEvent-30f26ad7-d36d-4c0e-ab02-68bb5ff3c4ab";
+}