Move JVM specific proto comparison tests to separate dir

Original commit: 5dd4e4cdd4

jps/jps-plugin/testData/comparison/jvmOnly/packageFacadeMultifileClassChanged/new2.kt

@@ -0,0 +1,13 @@
+@file:JvmName("Utils")
+@file:JvmMultifileClass
+package test
+
+public fun unchangedFun2() {}
+
+private fun addedFun2(): Int = 10
+
+private val addedVal2: String = "A"
+
+private val changedVal2: String = ""
+
+private fun changedFun2(arg: String) {}