Add intention to introduce import alias

#KT-16118 Fixed
 #KT-30007 Fixed

idea/testData/intentions/introduceImportAlias/variable.kt

@@ -0,0 +1,21 @@
+import Outer.Middle
+
+class Outer {
+    class Middle {
+        class Inner {
+            companion object {
+                const val SIZE = 1
+            }
+        }
+    }
+}
+
+class Test() {
+    fun test() {
+        val i = Middle.Inner.SIZE<caret>
+    }
+
+    fun test2() {
+        val i = Outer.Middle.Inner.SIZE
+    }
+}