This commit introduces an infrastructure to contribute generated code
ahead of time to initialize a BeanFactory. Code and hints can be
contributed to a BeanFactorInitialization, with the ability to write to
other packages if necessary.
An implementation of that new interface that registers a BeanDefinition
is also included in this commit. It delegates to a
BeanInstantiationGenerator for geenerating the instance supplier that
creates the bean instance.
For corner cases, a BeanRegistrationContributionProvider can be
implemented. It allows to return a custom BeanFactoryContribution for
a particualr bean definition. This usually uses the default
implementation with a custom instance supplier.
Note that this commit adds an temporary executable resolution that is
meant to be replaced by the use of ConstructorResolver
See gh-28088
5bc701d4fe