[add] added gradle build files

build.gradle.kts

@@ -0,0 +1,31 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Scala library project to get you started.
+ * For more details take a look at the Scala plugin chapter in the Gradle
+ * User Manual available at https://docs.gradle.org/5.6.4/userguide/scala_plugin.html
+ */
+
+plugins {
+    // Apply the scala plugin to add support for Scala
+    scala
+}
+
+repositories {
+    // Use jcenter for resolving dependencies.
+    // You can declare any Maven/Ivy/file repository here.
+    jcenter()
+}
+
+dependencies {
+    // Use Scala 2.11 in our library project
+    implementation("org.scala-lang:scala-library:2.11.12")
+    implementation("org.yaml:snakeyaml:1.25")
+
+    // Use Scalatest for testing our library
+    testImplementation("junit:junit:4.12")
+    testImplementation("org.scalatest:scalatest_2.11:3.0.8")
+
+    // Need scala-xml at test runtime
+    testRuntimeOnly("org.scala-lang.modules:scala-xml_2.11:1.2.0")
+}