feat(#286): fix missing implementation of resolveSchemaCompatibility

Author: arnaud-daroussin

modules/flink-common-api/src/main/scala/org/apache/flinkx/api/serializer/orderingSerializers.scala

@@ -254,6 +254,10 @@ class ReverseOrderingSerializerSnapshot[A](private var child: TypeSerializer[Ord
   override def readSnapshot(readVersion: Int, in: DataInputView, userCodeClassLoader: ClassLoader): Unit = {
     child = TypeSerializerSnapshot.readVersionedSnapshot[Ordering[A]](in, userCodeClassLoader).restoreSerializer()
   }
+  override def resolveSchemaCompatibility(
+      oldSerializerSnapshot: TypeSerializerSnapshot[Ordering[A]]
+  ): TypeSerializerSchemaCompatibility[Ordering[A]] =
+    TypeSerializerSchemaCompatibility.compatibleAsIs()
   override def restoreSerializer(): TypeSerializer[Ordering[A]] = new ReverseOrderingSerializer[A](child)
 }
 
@@ -288,5 +292,9 @@ class OptionOrderingSerializerSnapshot[A](private var child: TypeSerializer[Orde
   override def readSnapshot(readVersion: Int, in: DataInputView, userCodeClassLoader: ClassLoader): Unit = {
     child = TypeSerializerSnapshot.readVersionedSnapshot[Ordering[A]](in, userCodeClassLoader).restoreSerializer()
   }
+  override def resolveSchemaCompatibility(
+      oldSerializerSnapshot: TypeSerializerSnapshot[Ordering[Option[A]]]
+  ): TypeSerializerSchemaCompatibility[Ordering[Option[A]]] =
+    TypeSerializerSchemaCompatibility.compatibleAsIs()
   override def restoreSerializer(): TypeSerializer[Ordering[Option[A]]] = new OptionOrderingSerializer[A](child)
 }