[DependencyInjection][ProxyManagerBridge] Added type-hints to LazyProxy classes and interfaces #32283
This PR adds type-hints to the LazyProxy namespace of the DepenencyInjection component.
It also updates implementations of the LazyProxy interfaces inside the ProxyManager bridge. The consequence is that ProxyManagerBridge 5.0 won't work with DependencyInjection 4.4 anymore. If that is a problem, please tell me and I revert the ProxyManager part.