Add `PersistentPropertyAccessor` implementation that automatically converts custom `Map`s and `Collection`s.

[odrotbohm]

As we now support the detection of Vavr collections in TypeInformation, object mapping converters will need to be able to read and set them. Their current implementations are likely to expect Java-native Collection and Map implementations for properties that are considered collections and maps. This can be mitigated by providing a dedicated PersistentPropertyAccessor implementation that automatically translates the special collections into Java-native ones so that the converting code can still transparently work with those.