Add a clock widget

It's a simple clock that shows the current time

Signed-off-by: Yarden Shoham <git@yardenshoham.com>

internal/widget/clock.go

@@ -0,0 +1,23 @@
+package widget
+
+import (
+	"context"
+	"html/template"
+
+	"github.com/glanceapp/glance/internal/assets"
+)
+
+type Clock struct {
+	widgetBase `yaml:",inline"`
+}
+
+func (widget *Clock) Initialize() error {
+	widget.withTitle("Clock").withError(nil)
+	return nil
+}
+
+func (widget *Clock) Update(ctx context.Context) {}
+
+func (widget *Clock) Render() template.HTML {
+	return widget.render(widget, assets.ClockTemplate)
+}