Constants and enums should provide xml documentation

**Is your feature request related to a problem? Please describe.**
More than a problem is an annoyance. I noticed that constants and enums does not provide any xml documentation and this forces me to manually write them. An example is `OBJECT_IDENTIFIER` enum and `EVENT_SYSTEM_FOREGROUND` constant.

**Describe the solution you'd like**
Generate xml documentation for this types. Being forced to open the browser to see what a particular value does is not convenient.

**Describe alternatives you've considered**
Showing the whole [table](https://learn.microsoft.com/en-us/windows/win32/winauto/object-identifiers) from the Microsoft web site would be perfectly acceptable rather than mapping each value to its own description.

Start by locating the metadata generation path for the OBJECT_IDENTIFIER enum and EVENT_SYSTEM_FOREGROUND constant. Compare the generated output with the linked Microsoft object-identifiers table; the work is done when constants and enums expose useful XML documentation without requiring separate browser research.

Written by the indexing model from the issue text.