Add HTML widget

internal/widget/html.go

@@ -0,0 +1,20 @@
+package widget
+
+import (
+	"html/template"
+)
+
+type HTML struct {
+	widgetBase `yaml:",inline"`
+	Source     template.HTML `yaml:"source"`
+}
+
+func (widget *HTML) Initialize() error {
+	widget.withTitle("").withError(nil)
+
+	return nil
+}
+
+func (widget *HTML) Render() template.HTML {
+	return widget.Source
+}