Java to Kotlin converter: supported try-with-resource construct, fixed anonymous class generation + fixed a bug with method return type

#KT-4488 Fixed

j2k/tests/testData/ast/newClassExpression/newAnonymousClass.java

@@ -0,0 +1,7 @@
+//expression
+new Runnable() {
+  @Override
+  public void run() {
+    System.out.println("Run");
+  }
+};