on(Client)TimeChange and on(Client)WeatherChange

[LVRENT]

Is your feature request related to a problem? Please describe.
We don't have any events like these to be called when the time or the weather has been changed. Why it will be useful? We can develop world functions more precisely and with more organized code, depending on the exact moment when the time/weather has changed.
I know we can do this through Lua scripting (like using timers to check when these has changed or calling a scripter-defined function near the setTime/setWeather/setWeatherBlended) but as events they will be more concise and we can get rid by the custom functions/timers (this can also help for a little optimization?)

Describe the solution you'd like
Some new events like on(Client)TimeChange(currentTime, prevTime) and on(Client)WeatherChange(currentWeather, prevWeather).

Describe alternatives you've considered
We can use timers/scripter-defined functions but I think this will be better.

[MrDadosz]

Would be useful with blended weather, now it's hard to calculate when it will happen.

[Proxy-99]

I think that can be useful to add onClientWeatherChange
so you can handle the event in many lua scripts and resources