Rename frontend directory (#472)

* Rename directory

* Cleanup

* Recover lost images

* remove lint

frontend/src/timeUtils.ts

@@ -0,0 +1,29 @@
+import { DateTime, type DurationLikeObject } from "luxon";
+import { ReleaseRevision } from "./data/types";
+
+export function getAge(obj1: ReleaseRevision, obj2?: ReleaseRevision) {
+  const date = DateTime.fromISO(obj1.updated);
+  let dateNext = DateTime.now();
+  if (obj2) {
+    dateNext = DateTime.fromISO(obj2.updated);
+  }
+  const diff = dateNext.diff(date);
+
+  const map: Record<string, string> = {
+    years: "yr",
+    months: "mo",
+    days: "d",
+    hours: "h",
+    minutes: "m",
+    seconds: "s",
+    milliseconds: "ms",
+  };
+
+  for (const unit of Object.keys(map)) {
+    const val = diff.as(unit as keyof DurationLikeObject);
+    if (val >= 1) {
+      return Math.round(val) + map[unit];
+    }
+  }
+  return "n/a";
+}