Make Bean (De)SerializerModifier implement Serializable #4209 (#4212)

Author: mukham12

Diff for: src/main/java/com/fasterxml/jackson/databind/deser/BeanDeserializerModifier.java

@@ -1,5 +1,6 @@
 package com.fasterxml.jackson.databind.deser;
 
+import java.io.Serializable;
 import java.util.List;
 
 import com.fasterxml.jackson.databind.*;
@@ -45,7 +46,7 @@
  * but have no effect; this is mostly so that new methods can be added in later
  * versions.
  */
-public abstract class BeanDeserializerModifier
+public abstract class BeanDeserializerModifier implements Serializable
 {
     /**
      * Method called by {@link BeanDeserializerFactory} when it has collected

Diff for: src/main/java/com/fasterxml/jackson/databind/ser/BeanSerializerModifier.java

@@ -1,5 +1,6 @@
 package com.fasterxml.jackson.databind.ser;
 
+import java.io.Serializable;
 import java.util.List;
 
 import com.fasterxml.jackson.databind.*;
@@ -33,7 +34,7 @@
  * Default method implementations are "no-op"s, meaning that methods are implemented
  * but have no effect.
  */
-public abstract class BeanSerializerModifier
+public abstract class BeanSerializerModifier implements Serializable
 {
     /**
      * Method called by {@link BeanSerializerFactory} with tentative set