Unit Test Tooling: Support Go to Test/Create Test actions for top-level declarations

#KT-10133 Fixed

idea/testData/navigation/gotoTestOrCode/fromJavaTestToKotlinFile.2.kt

@@ -0,0 +1,7 @@
+@file:JvmName("FooUtils")
+@file:JvmMultifileClass
+import junit.framework.TestCase
+
+fun bar() {
+
+}