Refactor the `org.springframework.boot.actuate.context` package
with the following changes:

- Deprecate several classes which would ideally be internal

- Replace `ConfigurationBeanFactoryMetadata` with a new
  `ConfigurationPropertiesBean` class to better reflect that we no
  longer maintain meta-data directly.

- Use constructor injection and final fields whenever possible

- Rename `ConfiguraionPropertiesBeanDefinition` to
  `ConfigurationPropertiesValueObjectBeanDefinition` to align
  with the binder changes made in commit 0b3015e4

- Add additional tests

Closes gh-16903