progress on filter panel

src/renderer/helpers/time-utils.ts

@@ -0,0 +1,14 @@
+const SECONDS_IN_MINUTE = 60;
+const MINUTES_IN_HOUR = 60;
+
+export function min_to_s(minutes: number): number{
+    return minutes * SECONDS_IN_MINUTE;
+}
+
+export function hour_to_min(hours: number): number{
+    return hours * MINUTES_IN_HOUR;
+}
+
+export function hour_to_s(hours: number): number{
+    return hours * min_to_s(MINUTES_IN_HOUR);
+}