Break utils package into subpackages.

internal/utils/datetime/duration.go

@@ -0,0 +1,22 @@
+package datetime
+
+import "time"
+
+// ExtractTimeComponents extracts number of days, hours, minutes, seconds, microseconds from duration
+func ExtractTimeComponents(duration time.Duration) (days, hours, minutes, seconds, microseconds int64) {
+	days = int64(duration / (24 * time.Hour))
+	reminder := duration % (24 * time.Hour)
+
+	hours = int64(reminder / time.Hour)
+	reminder = reminder % time.Hour
+
+	minutes = int64(reminder / time.Minute)
+	reminder = reminder % time.Minute
+
+	seconds = int64(reminder / time.Second)
+	reminder = reminder % time.Second
+
+	microseconds = int64(reminder / time.Microsecond)
+
+	return
+}