Time and Weather: Add random weather #1995
Description
Follow up of #1991 . The prototype in #1913 had hardcoded logic to randomize the effects with certain probability. That was left out from the initial merge for simplicity, so now every day is the same cloudy and every night is the same foggy, and it never rains.
How likely is to have a rainy day? Or a foggy dawn? This could be a resource inside the TimeAndWeather node, so it can be adjusted for the main areas of the game.