message: Add `TimeDiff::from_seconds`
diff: @@ -238,10 +238,15 @@ impl FromStr for TimeDiff {
  }
  impl TimeDiff {
  - /// Returns the timestamp as the number of milliseconds since the Unix epoch
  + /// Returns the time difference as the number of milliseconds since the Unix epoch
  pub fn millis(&self) -> u64 {
  self.0
  }
  +
  + /// Creates a new time difference from seconds.
  + pub const fn from_seconds(seconds: u32) -> Self {
  + TimeDiff(seconds as u64 * 1_000)
  + }
  }
  impl Mul<u64> for TimeDiff {
  