[PATCH 3/5] windowscodecs: Use IWICComponentFactory_CreateMetadataReader instead of create_instance.

[Esme Povirk (they/them)]

We avoid using CoCreateInstance inside windowscodecs because COM may
not be initialized. Applications can use WICCreateImagingFactory_Proxy
to get WIC interfaces without initializing COM.

I'm guessing this is for wmphoto. My suggestion would be to use a
different create_instance implementation in that library, maybe just a
wrapper around CoCreateInstance. We may need to reorganize things so
we can share the correct set of functions.