Integrate qt-multi-screen-compositor/disable_client_cursor
Commit: seco-ne/tools/qt-multi-screen-compositor@13d1eaab
CI: Add .gitlab-ci.yml file and submodule
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Commit: seco-ne/tools/qt-multi-screen-compositor@3e474d2c
Mouse: Disable client cursor
Deactivation of the ClientCursor, because it is displayed at touch events.
BCS: 746-000666