Add support for native-image

Hello!

I tried using spring-data-rest in a native image. The native image doesn't start, it fails with this exception: https://ge.spring.io/s/a66xyypotax3k/tests/:data-rest-mongodb:nativeAotTest/com.example.data.rest.mongodb.DataRestMongoDbApplicationAotTests/initializationError?top-execution=1

Main cause is:

Caused by: com.oracle.svm.core.jdk.UnsupportedFeatureError: Proxy class defined by interfaces [interface java.util.List, interface org.springframework.aop.SpringProxy, interface org.springframework.aop.framework.Advised, interface org.springframework.core.DecoratingProxy] not found. Generating proxy classes at runtime is not supported. Proxy classes need to be defined at image build time by specifying the list of interfaces that they implement. To define proxy classes use -H:DynamicProxyConfigurationFiles=<comma-separated-config-files> and -H:DynamicProxyConfigurationResources=<comma-separated-config-resources> options.	
	at com.oracle.svm.core.util.VMError.unsupportedFeature(VMError.java:89) ~[na:na]	
	at com.oracle.svm.reflect.proxy.DynamicProxySupport.getProxyClass(DynamicProxySupport.java:158) ~[na:na]	
	at java.lang.reflect.Proxy.getProxyConstructor(Proxy.java:48) ~[data-rest-mongodb:na]	
	at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:1037) ~[data-rest-mongodb:na]	
	at org.springframework.aop.framework.JdkDynamicAopProxy.getProxy(JdkDynamicAopProxy.java:126) ~[na:na]	
	at org.springframework.aop.framework.JdkDynamicAopProxy.getProxy(JdkDynamicAopProxy.java:118) ~[na:na]	
	at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:97) ~[na:na]	
	at org.springframework.plugin.core.support.AbstractTypeAwareSupport.getBeans(AbstractTypeAwareSupport.java:94) ~[data-rest-mongodb:3.0.0-M1]	
	at org.springframework.plugin.core.support.PluginRegistryFactoryBean.getObject(PluginRegistryFactoryBean.java:38) ~[data-rest-mongodb:3.0.0-M1]	
	at org.springframework.hateoas.config.HateoasConfiguration.relProviderPluginRegistry(HateoasConfiguration.java:118) ~[data-rest-mongodb:2.0.0-SNAPSHOT]	
	at org.springframework.hateoas.config.HateoasConfiguration__BeanDefinitions.lambda$getRelProviderPluginRegistryInstanceSupplier$5(HateoasConfiguration__BeanDefinitions.java:138) ~[na:na]	
	at org.springframework.util.function.ThrowingBiFunction.apply(ThrowingBiFunction.java:68) ~[data-rest-mongodb:6.0.0-SNAPSHOT]	
	at org.springframework.util.function.ThrowingBiFunction.apply(ThrowingBiFunction.java:54) ~[data-rest-mongodb:6.0.0-SNAPSHOT]	
	at org.springframework.beans.factory.aot.BeanInstanceSupplier.get(BeanInstanceSupplier.java:210) ~[na:na]	
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainInstanceFromSupplier(AbstractAutowireCapableBeanFactory.java:1224) ~[data-rest-mongodb:6.0.0-SNAPSHOT]	
	... 101 common frames omitted

See this smoke test for more details.