D21356: Port to ECMAddQmlModule, add plugins.qmltypes files

[Friedrich W. H. Kossebau]

kossebau added a dependency: D20984: Add ECMAddQmlModule.

REPOSITORY
  R296 KDeclarative

BRANCH
  porttoECMInstallQmlModules

REVISION DETAIL
  https://phabricator.kde.org/D21356

To: kossebau, #plasma, apol
Cc: apol, kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns