Rewrite itgui and add new screenshots

cmd/itgui/titledText.go

@@ -0,0 +1,35 @@
+package main
+
+import "fyne.io/fyne/v2/widget"
+
+type titledText struct {
+	*widget.RichText
+}
+
+func newTitledText(title, text string) titledText {
+	titleStyle := widget.RichTextStyleHeading
+	titleStyle.TextStyle.Bold = false
+	return titledText{
+		widget.NewRichText(
+			&widget.TextSegment{
+				Style: widget.RichTextStyleParagraph,
+				Text:  title,
+			},
+			&widget.TextSegment{
+				Style: titleStyle,
+				Text:  text,
+			},
+			&widget.SeparatorSegment{},
+		),
+	}
+}
+
+func (t titledText) SetTitle(s string) {
+	t.RichText.Segments[0].(*widget.TextSegment).Text = s
+	t.Refresh()
+}
+
+func (t titledText) SetBody(s string) {
+	t.RichText.Segments[1].(*widget.TextSegment).Text = s
+	t.Refresh()
+}