refactor widgets, add wrapper structs

cwidgets/compact/gauge.go

@@ -0,0 +1,25 @@
+package compact
+
+import (
+	ui "github.com/gizak/termui"
+)
+
+type GaugeCol struct {
+	*ui.Gauge
+}
+
+func NewGaugeCol() *GaugeCol {
+	g := ui.NewGauge()
+	g.Height = 1
+	g.Border = false
+	g.Percent = 0
+	g.PaddingBottom = 0
+	g.BarColor = ui.ColorGreen
+	g.Label = "-"
+	return &GaugeCol{g}
+}
+
+func (w *GaugeCol) Reset() {
+	w.Label = "-"
+	w.Percent = 0
+}