Introduce RedisCustomConversions extending o.s.d.convert.CustomConversions.
Remove o.s.d.mongo.core.convert.CustomConversions implementation code and utility classes and let it extend RedisCustomConversions. Replace references to o.s.d.r.c.c.CustomConversions with o.s.d.convert.CustomConversions. Adapt tests.
Introduce constructors for ObjectHashMapper and RedisKeyValueAdapter requiring o.s.d.convert.CustomConversions and deprecate constructors accepting o.s.d.r.c.c.CustomConversions.
Related ticket: DATACMNS-1035.