[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/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();