Get the framed widget height including vertical spacing.
Returns
number
Framed-widget height plus style.ItemSpacingY, in pixels.
Remarks
Approximately GetFontSize() + style.FramePaddingY * 2 + style.ItemSpacingY,
the distance between consecutive rows of framed widgets in pixels. Here
style is the mapped field view returned by ImGui.viewImGuiStyle(styleHandle).
Get the framed widget height including vertical spacing.