feat: <scala> add some dsl use case

chapi-ast-scala/src/test/kotlin/chapi/ast/scalaast/ScalaFullIdentListenerTest.kt

 package chapi.ast.scalaast
 
 import chapi.domain.core.DataStructType
+import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
 import kotlin.test.assertEquals
 
@@ -67,4 +68,19 @@ class Outer(i : Int) {
         assertEquals(container.DataStructures[0].InnerStructures[0].Type, DataStructType.OBJECT)
         assertEquals(container.DataStructures[0].InnerStructures[0].NodeName, "Inner")
     }
+
+    @Test
+    internal fun shouldIdentExtendClassName() {
+
+    }
+
+    @Test
+    internal fun shouldIdentTraitName() {
+
+    }
+
+    @Test
+    internal fun shouldIdentMultipleTraitName() {
+
+    }
 }

chapi-ast-scala/src/test/resources/dsl/Story.scala

+// https://gist.github.com/nicerobot/4189552
+object Story {
+  object Once { def upon = (x: a.type) => x }
+  object a { def time = (x: languages.type) => x }
+  object languages { def were = (x: inflexible.type) => x }
+  object inflexible { def along = (x: came.type) => x }
+  object came { def Scala = (x: inflexible.type) => x }
+  implicit def string(s : String) : inflexible.type = inflexible
+
+  def main(args: Array[String]): Unit = {
+    Once upon a time languages were inflexible; "Then " along came Scala ". The End!"
+  }
+}

chapi-domain/src/main/kotlin/chapi/domain/core/CodeDataStruct.kt

@@ -14,7 +14,8 @@ enum class DataStructType (val structType: String) {
     OBJECT("Object"),
     INNERSTRUCTURES("InnerStructures"),
     CREATORCLASS("CreatorClass"),
-    ABSTRACTCLASS("AbstractClass")
+    ABSTRACTCLASS("AbstractClass"),
+    TRAIT("Trait") // for scala
 }
 
 @Serializable