Add a {time} template helper, reuse timestamp code from Quick Note as a niceTime (#555)

niceTime helper

plug-api/lib/dates.ts

@@ -9,3 +9,10 @@ export function niceDate(d: Date): string {
 
   return d.getFullYear() + "-" + pad(d.getMonth() + 1) + "-" + pad(d.getDate());
 }
+
+export function niceTime(d: Date): string {
+  const isoDate = d.toISOString();
+  let [date, time] = isoDate.split("T");
+  // hh:mm:ss
+  return time.split(".")[0];
+}