Convert "Color Grading" filters to QML.

Use lift_gamma_gain filter instead of frei0r.coloradj for non-GPU processing to match movit.lift_gamma_gain functionality.
Fix inclusion of qml/filters/color/meta_movit.qml.
Fix size of color wheels.
Add QML UI for legacy frei0r.coloradj_RGB filter.

This filter is hidden from the add filter menu but made available for
filters that have already been included in projects.
Clear filter UI when selecting new shot on timeline.