In my experience, the wxWidgets documentation and forums are pretty good resources for Windows manifest files. YMMV.

An example from one of my projects: https://pastebin.com/Jvjn5C6S

You need to reference it from your resource source like so: https://pastebin.com/8FUi4tMz

And then compile that into an object file with windres: x86_64-w64-mingw32-windres rsrc/metadata/windows.rc -o winbuild/windowsrc.o

And link it with your project like you would any other object file.