V7_7_0

Samples for Open CASCADE Technology 7.7 demonstrating integration of OCCT 3D Viewer into Qt-based GUI.

Within this release:

• Added Qt6 support.
• Added QtQuick/QML sample.
• Added QWidget sample as alternative to QOpenGLWidget.
• Added handling of HiDPI screens via Qt::AA_EnableHighDpiScaling.
• Added support of multi-touch gestures in 3D Viewer (camera rotation, panning, zooming gestures).
• Fixed various reported bugs.
• Improved projects structure.
• Added CI/CD actions building and running samples on Ubuntu 24.04 with OCCT 7.6.3 + Qt 5.15 and Qt 6.4.