Extract VisualizerDirectives to separate file

compiler/visualizer/tests/org/jetbrains/kotlin/visualizer/AbstractVisualizerTest.kt

@@ -9,7 +9,6 @@ import org.jetbrains.kotlin.platform.jvm.JvmPlatforms
 import org.jetbrains.kotlin.test.Constructor
 import org.jetbrains.kotlin.test.builders.TestConfigurationBuilder
 import org.jetbrains.kotlin.test.directives.JvmEnvironmentConfigurationDirectives
-import org.jetbrains.kotlin.test.directives.model.SimpleDirectivesContainer
 import org.jetbrains.kotlin.test.model.DependencyKind
 import org.jetbrains.kotlin.test.model.FrontendFacade
 import org.jetbrains.kotlin.test.model.FrontendKind
@@ -64,11 +63,3 @@ abstract class AbstractVisualizerTest : AbstractKotlinCompilerTest() {
     }
 }
 
-internal object VisualizerDirectives : SimpleDirectivesContainer() {
-    val TEST_FILE_PATH by stringDirective(
-        description = "Specify that part of test file path must be replaced with EXPECTED_FILE_PATH"
-    )
-    val EXPECTED_FILE_PATH by stringDirective(
-        description = "Specify the path to expected result file that will be inserted instead of TEST_FILE_PATH"
-    )
-}

compiler/visualizer/tests/org/jetbrains/kotlin/visualizer/VisualizerDirectives.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.visualizer
+
+import org.jetbrains.kotlin.test.directives.model.SimpleDirectivesContainer
+
+internal object VisualizerDirectives : SimpleDirectivesContainer() {
+    val TEST_FILE_PATH by stringDirective(
+        description = "Specify that part of test file path must be replaced with EXPECTED_FILE_PATH"
+    )
+    val EXPECTED_FILE_PATH by stringDirective(
+        description = "Specify the path to expected result file that will be inserted instead of TEST_FILE_PATH"
+    )
+}