missing QSizeF::toAlignedSize() as analogy to QRectF::toAlignedRect()

QRectF has a very useful function toAlignedRect() which basically rounds-up the rectangle to produce integer QRect.

I would find very useful and intuitive to have similar function for QSizeF, i.e. toAlignedSize() which would return rounded-up integer QSize.

Without this, one must manually write QSize(ceil(sizeF.width()), ceil(sizeF.height())).