feat: add direct access to custom resource client

Author: metacosm

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/ConfiguredController.java

@@ -1,5 +1,8 @@
 package io.javaoperatorsdk.operator.processing;
 
+import io.fabric8.kubernetes.api.model.KubernetesResourceList;
+import io.fabric8.kubernetes.client.dsl.MixedOperation;
+import io.fabric8.kubernetes.client.dsl.Resource;
 import java.io.Closeable;
 import java.io.IOException;
 import java.util.Objects;
@@ -84,6 +87,10 @@ public KubernetesClient getClient() {
     return k8sClient;
   }
 
+  public MixedOperation<R, KubernetesResourceList<R>, Resource<R>> getCRClient() {
+    return k8sClient.resources(configuration.getCustomResourceClass());
+  }
+
   /**
    * Registers the specified controller with this operator, overriding its default configuration by
    * the specified one (usually created via