Add an `InternetShortcut` coclass for `IUniformResourceLocatorW`?

**Is your feature request related to a problem? Please describe.**

Every other COM type I've had to deal with has a convenient coclass, except for this one.

**Describe the solution you'd like**

That an `InternetShortcut` coclass be added for feature parity and convenience.

**Describe alternatives you've considered**

Making my own coclass, which I do currently but probably shouldn't have to.

Start by locating existing coclass definitions and the metadata-generation entry points in the win32metadata repository, then compare how other COM types are represented. Add the InternetShortcut coclass for IUniformResourceLocatorW and verify that the generated Win32 metadata exposes it consistently with the other coclasses.

Written by the indexing model from the issue text.