Imports of package layout

PathSynopsis
fyne.io/fyne/v2Package fyne describes the objects and components available to any Fyne app.
fyne.io/fyne/v2/canvasPackage canvas contains all of the primitive CanvasObjects that make up a Fyne GUI.
fyne.io/fyne/v2/themePackage theme defines how a Fyne app should look when rendered.
mathPackage math provides basic constants and mathematical functions.