Support windows

[natsuk4ze]

• [x] Add c++ code
• [x] Add example for windows
• [x] Add windows test
• [x] Update readme
• [x] Refactor

[natsuk4ze]

NOTE:

I decided to set up a c++ 20 environment to use IAsyncAction and co_await.

In CMakeList.txt

set(CMAKE_CXX_STANDARD 20)

and,

if(MSVC)
  target_compile_options(${PLUGIN_NAME} PRIVATE /await)
endif()

settings were required.

*No additional configuration is required for package users.

microsoft/PowerToys#6856