Add some important commands as sliders in the server host menus

I often see people asking if its possible to do some of the things these commands do, e.g. changing the odds of the autoplayers spawning as a hero, as most people don’t know these commands even exist. Adding a couple important ones to the host menu would get rid of a lot of confusion, and would make using them more convenient. I think the main 3 commands that should be added are Autoplayers.SpecialSpawnProbability_Gameplay (chance of AI spawning in as reinforcements), Autoplayers.HeroSpawnProbability_Gameplay (chance of AI spawning in as heroes), and GameTime.TimeScale (how fast the game should run)