Add LICENSE comment

Author: takapi327

core/lepus-router/src/test/scala/lepus/router/BodyConverterTest.scala

@@ -1,3 +1,7 @@
+/** This file is part of the Lepus Framework. For the full copyright and license information, please view the LICENSE
+  * file that was distributed with this source code.
+  */
+
 package lepus.router
 
 import io.circe.generic.semiauto.{ deriveDecoder, deriveEncoder }

core/lepus-router/src/test/scala/lepus/router/EndpointConverterTest.scala

@@ -11,6 +11,7 @@ import scala.reflect.ClassTag
 
 import org.scalacheck.Prop._
 import org.scalacheck.{ Arbitrary, Gen }
+
 import org.scalatest.Assertion
 import org.scalatest.flatspec.AnyFlatSpec
 import org.scalatest.matchers.should.Matchers

core/lepus-router/src/test/scala/lepus/router/ValidatorTest.scala

@@ -1,3 +1,7 @@
+/** This file is part of the Lepus Framework. For the full copyright and license information, please view the LICENSE
+  * file that was distributed with this source code.
+  */
+
 package lepus.router
 
 import org.specs2.mutable.Specification