Add method `ObjectMapper.copyWith(JsonFactory)`

[quaff]

It's a valid use case that reuse the same configuration over different data formats

ObjectMapper jsonObjectMapper = new ObjectMapper();
// do some configuration ...
ObjectMapper cborObjectMapper = jsonObjectMapper.copyWith(new SmileFactory());

Spring Boot configuration take affect only json format, this will make it possible to all format, for example

 @Bean 
 @ConditionalOnMissingBean(value = MappingJackson2CborHttpMessageConverter.class) 
// other conditions
 MappingJackson2CborHttpMessageConverter mappingJackson2CborHttpMessageConverter(ObjectMapper objectMapper) { 
 	return new MappingJackson2CborHttpMessageConverter(objectMapper.copyWith(new CBORFactory())); 
 } 

spring-projects/spring-boot#27319 (comment)

[cowtowncoder]

I can see how this could be useful. I thought I had filed an issue like this before.

[cowtowncoder]

I think #2722 is what I had in mind. Although TBH, that is for builders; "copy" methods are only available on 2.x.
So I guess these are separate.

[cowtowncoder]

One thing to note: this would not work for all formats: XML (jackson-dataformat-xml) for example requires XmlMapper subtype. But it would work for most formats so that's probably useful enough.