plugin: Use kwin_export.h instead of kwinglobals.h
It only uses the KWIN_EXPORT
macro in plugin.h.
kwinglobals.h comes from libkwineffects and not kwin core.
(KWIN_PLUGIN_VERSION_STRING
comes from config-kwin.h)
This makes it easier to build an out-of-tree KWin plug-in.
Kai Uwe Broulik kai_uwe.broulik@mbition.io on behalf of MBition GmbH
https://github.com/mercedes-benz/foss/blob/master/PROVIDER_INFORMATION.md