Minor, move irText tests on data classes to a subdirectory

compiler/testData/ir/irText/classes/dataClasses/kt31649.kt.txt

@@ -0,0 +1,80 @@
+data class TestData {
+  constructor(nn: Nothing?) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  val nn: Nothing?
+    field = nn
+    get
+
+  operator fun component1(): Nothing? {
+    return <this>.#nn
+  }
+
+  fun copy(nn: Nothing? = <this>.#nn): TestData {
+    return TestData(nn = nn)
+  }
+
+  override fun toString(): String {
+    return "TestData(" + "nn=" + <this>.#nn + ")"
+  }
+
+  override fun hashCode(): Int {
+    return when {
+      EQEQ(arg0 = <this>.#nn, arg1 = null) -> 0
+      else -> <this>.#nn.hashCode()
+    }
+  }
+
+  override operator fun equals(other: Any?): Boolean {
+    when {
+      EQEQEQ(arg0 = <this>, arg1 = other) -> return true
+    }
+    when {
+      other !is TestData -> return false
+    }
+    val tmp0_other_with_cast: TestData = other as TestData
+    when {
+      EQEQ(arg0 = <this>.#nn, arg1 = tmp0_other_with_cast.#nn).not() -> return false
+    }
+    return true
+  }
+
+}
+
+inline class TestInline {
+  constructor(nn: Nothing?) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  val nn: Nothing?
+    field = nn
+    get
+
+  override fun toString(): String {
+    return "TestInline(" + "nn=" + <this>.#nn + ")"
+  }
+
+  override fun hashCode(): Int {
+    return when {
+      EQEQ(arg0 = <this>.#nn, arg1 = null) -> 0
+      else -> <this>.#nn.hashCode()
+    }
+  }
+
+  override operator fun equals(other: Any?): Boolean {
+    when {
+      other !is TestInline -> return false
+    }
+    val tmp0_other_with_cast: TestInline = other as TestInline
+    when {
+      EQEQ(arg0 = <this>.#nn, arg1 = tmp0_other_with_cast.#nn).not() -> return false
+    }
+    return true
+  }
+
+}