save angle and scale in predefined brushes

BUG:268209

krita/plugins/paintops/libbrush/kis_gbr_brush.cpp

@@ -485,6 +485,8 @@ void KisGbrBrush::toXML(QDomDocument& d, QDomElement& e) const
     e.setAttribute("type", "gbr_brush");
     e.setAttribute("filename", shortFilename());
     e.setAttribute("spacing", QString::number(spacing()));
+    e.setAttribute("angle", QString::number(KisBrush::angle()));
+    e.setAttribute("scale", QString::number(KisBrush::scale()));
     KisBrush::toXML(d, e);
 }
 

krita/plugins/paintops/libbrush/kis_gbr_brush_factory.cpp

@@ -51,6 +51,12 @@ KisBrushSP KisGbrBrushFactory::getOrCreateBrush(const QDomElement& brushDefiniti
     }
     brush->setSpacing(spacing);
 
+    double angle = brushDefinition.attribute("angle", "0.0").toDouble();
+    brush->setAngle(angle);
+
+    double scale = brushDefinition.attribute("scale", "1.0").toDouble();
+    brush->setScale(scale);
+
     return brush;
 
 }