The VectorImage item will take a vector graphics file like an SVG, and
generates a QtQuick representation out of it at runtime. Initially,
it will act as the counterpart of svgtoqml tool, and later on it might
include other formats than SVG.
Task-number: QTBUG-120987
Change-Id: Ie85c5a6309004202b449f7adc6a71d2a772df228
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>