Add editor packages

internal/editor/event/quit.go

@@ -0,0 +1,15 @@
+package event
+
+import "time"
+
+type Quit struct {
+	t time.Time
+}
+
+func (e *Quit) Time() time.Time {
+	return e.t
+}
+
+func NewQuit() *Quit {
+	return &Quit{}
+}