Add missing builder methods in config classes

Config classes allow replacing old XML config with Java code. There is a vast assortment of builder methods (with names starting with with) that allow creating a config in a declarative manner.

However, I as I converted my existing config, I noticed that some were missing, forcing me to use setters instead. This means this is not blocking anyone, it's just a nice-to-have.

This is the list of the once i came across:

• ChangeMoveSelectorConfig.withEntitySelectorConfig() is missing
• SwapMoveSelectorConfig.withEntitySelectorConfig() is missing
• EntitySelectorConfig.withEntityClass() has no with* methods
• ValueSelectorConfig has no with* methods
• QueuedEntityPlacerConfig.withMoveSelectorConfigList() is present, but withMoveSelectorConfigs (taking generics, like other methods such as SolverConfig.withEntityClasses()) is missing