This change follows up on https://github.com/haskell-game/dear-imgui.hs/pull/41
where it seems like cabal still need the examples dependency even when they are
not buildable, e.g.: `next goal: vulkan-utils (dependency of dear-imgui)` with
cabal-install version 3.2.0.0.
This handles the remaining enum types in the headers that aren't in the enums section.
It also automatically handles adding all the enumerations to the inline-c context types table, and a small improvement to the display of parse error messages.
