[util] Add method that returns random time in milliseconds

src/random.cpp

@@ -592,6 +592,11 @@ std::chrono::microseconds GetRandMicros(std::chrono::microseconds duration_max)
     return std::chrono::microseconds{GetRand(duration_max.count())};
 }
 
+std::chrono::milliseconds GetRandMillis(std::chrono::milliseconds duration_max) noexcept
+{
+    return std::chrono::milliseconds{GetRand(duration_max.count())};
+}
+
 int GetRandInt(int nMax) noexcept
 {
     return GetRand(nMax);