Numerous changes to the actuator project, including:
- Specific Endpoint interface
- Spring MVC/Enpoint adapter
- Management server context changes
- Consistent auto-configuration class naming
- Auto-configuration ordering
- Javadoc, code formatting and tests
Previously EmbedddedContainerConfiguration cannot be imported directly.
This change ensures that the nested classes are not loaded automatically
so there can be no issues with the annotation parameters.
There might be a case for a change in Spring here since the framework
itself could just be more cautious when processing nested classes.
[Fixes#50880927]
