Jackson serializer as replacement for Java serialization, #24155

* Copied from Lagom, with the following differences
  * Jsonable and CompressedJsonable not included
  * pcollection and guava modules not enabled by default
  * added scala and afterburner modules
* JSON, CBOR and Smile options (different serializers)
* JMH benchmark
* jackson version 2.9.9
* test polymorphism
* serializer for ActorRef
* Address serializer
* FiniteDuration serializer, same as java.time.Duration
* use blacklist from Jackson databind against gadgets
* disallow binding to open ended types, such as java.io.Serializable
* Configurable ObjectMapper ser/deser features
* testing date formats with WRITE_DATES_AS_TIMESTAMPS on/off
* ActorSystemSetup for ObjectMapper creation
  * and possibility to lookup created ObjectMapper via ObjectMapperProvider extension
* createObjectMapper without ActorSystem, needed by Lagom test
* add basic docs
* skip Scala 2.13 for akka-serialization-jackson for now, until the Jackson
  Scala module has been released

akka-serialization-jackson/src/test/scala/doc/akka/serialization/jackson/SerializationDocSpec.scala

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 Lightbend Inc. <https://www.lightbend.com>
+ */
+
+package doc.akka.serialization.jackson
+
+//#marker-interface
+/**
+ * Marker interface for messages, events and snapshots that are serialized with Jackson.
+ */
+trait MySerializable
+
+final case class Message(name: String, nr: Int) extends MySerializable
+//#marker-interface
+
+object SerializationDocSpec {
+  val config = """
+    #//#serialization-bindings
+    akka.actor {
+      serialization-bindings {
+        "com.myservice.MySerializable" = jackson-json
+      }
+    }
+    #//#serialization-bindings
+  """
+
+  val configMigration = """
+    #//#migrations-conf
+    akka.serialization.jackson.migrations {
+      "com.myservice.event.ItemAdded" = "com.myservice.event.ItemAddedMigration"
+    }
+    #//#migrations-conf
+  """
+
+  val configMigrationRenamClass = """
+    #//#migrations-conf-rename
+    akka.serialization.jackson.migrations {
+      "com.myservice.event.OrederAdded" = "com.myservice.event.OrderPlacedMigration"
+    }
+    #//#migrations-conf-rename
+  """
+}
+// FIXME add real tests for the migrations, see EventMigrationTest.java in Lagom