Update node coding

Author: tomwyr

src/main/kotlin/com/tomwyr/common/Models.kt

@@ -1,6 +1,11 @@
+@file:OptIn(ExperimentalSerializationApi::class)
+
 package com.tomwyr.common
 
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.JsonClassDiscriminator
 
 @Serializable
 class NodeParams(
@@ -17,24 +22,28 @@ class NodeTree(val scenes: List<Scene>)
 class Scene(val name: String, val root: Node)
 
 @Serializable
+@JsonClassDiscriminator("nodeType")
 sealed class Node {
     abstract val name: String
 }
 
 @Serializable
+@SerialName("parentNode")
 class ParentNode(
     override val name: String,
     val type: String,
     val children: List<Node>,
 ) : Node()
 
 @Serializable
+@SerialName("leafNode")
 class LeafNode(
     override val name: String,
     val type: String,
 ) : Node()
 
 @Serializable
+@SerialName("nestedScene")
 class NestedScene(
     override val name: String,
     val scene: String,