Added Button widget and removed Launcher widget, as it's now obsolete

widget_button.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"image"
+	"log"
+
+	"github.com/golang/freetype"
+	"github.com/muesli/streamdeck"
+)
+
+type ButtonWidget struct {
+	BaseWidget
+	icon  string
+	label string
+}
+
+func (w *ButtonWidget) Update(dev *streamdeck.Device) {
+	img := image.NewRGBA(image.Rect(0, 0, 72, 72))
+	if w.label != "" {
+		drawImage(img, w.icon, 48, 12, 4)
+		drawString(img, ttfFont, w.label, 8, freetype.Pt(-1, img.Bounds().Dx()-6))
+	} else {
+		drawImage(img, w.icon, 64, 4, 4)
+	}
+
+	err := dev.SetImage(w.key, img)
+	if err != nil {
+		log.Fatal(err)
+	}
+}