override/implement annotation settings (IDEA-58379)

annotations are removed by default for both return and parameters, custom OverrideImplementHandlers can provide predefined annotations which must be repeat in overriders, custom annotations can be configured by the user

java/java-tests/testData/codeInsight/generateEquals/afterArraysClass.java

@@ -1,7 +1,7 @@
 class Arrays {
   int[] i;
 
-    @java.lang.Override
+    @Override
     public boolean equals(Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
@@ -13,8 +13,8 @@ class Arrays {
         return true;
     }
 
-    @java.lang.Override
+    @Override
     public int hashCode() {
-        return i != null ? i.hashCode() : 0;
+        return java.util.Arrays.hashCode(i);
     }
 }