Add HttpMessageConverters

Prior to this commit, Spring Web would configure
`HttpMessageConverter<?>` collections on clients like `RestTemplate` and
on the server infrastructure, in `WebMvcConfigurationSupport`.

This commit introduces a high-level construct for building and
configuring ordered collections of converters.

This includes:
* configuration of well-known converters with classpath detection
* configuration of shared converters, or client/server specific
* configuration of custom converters

See gh-33894

Author: bclozel