Merge topic 'ci-win-package'

4c7c66dcf5 gitlab-ci: Add jobs to make Windows x86_64 and i386 packages
729ee30c2e gitlab-ci: Simplify collection of CTestTestfile artifacts
1eab922d92 Utilities/Release: Add script to sign and package Windows binaries
db48074d58 Utilities/Release: Add script to build Qt 5.12.1 Windows binaries

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !7281