KT-6050 Support completion for super qualifier

#KT-6050 Fixed

idea/idea-completion/testData/basic/common/InEmptyImport.kt

@@ -2,7 +2,7 @@ package Test
 
 import <caret>
 
-// EXIST: java,
+// EXIST: java
 // EXIST_JAVA_ONLY: javax
 // EXIST_JS_ONLY: jquery, html5
 // ABSENT: Array, Integer

idea/idea-completion/testData/basic/common/super/QualifierType1.kt

@@ -0,0 +1,15 @@
+open class Base
+
+open class A : Base
+
+interface I
+
+class B : A(), I {
+    fun foo() {
+        super<<caret>
+    }
+}
+
+// EXIST: A
+// EXIST: I
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierType2.kt

@@ -0,0 +1,13 @@
+open class A
+
+interface I
+
+class B : A(), I {
+    fun foo() {
+        super<<caret>>
+    }
+}
+
+// EXIST: A
+// EXIST: I
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierType3.kt

@@ -0,0 +1,13 @@
+open class AA
+
+interface AI
+
+class B : AA(), AI {
+    fun foo() {
+        super<A<caret>
+    }
+}
+
+// EXIST: AA
+// EXIST: AI
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierType4.kt

@@ -0,0 +1,17 @@
+package p
+
+open class A
+
+interface I {
+    interface Nested
+}
+
+class B : A(), I.Nested {
+    fun foo() {
+        super<<caret>
+    }
+}
+
+// EXIST: A
+// EXIST: { lookupString: "Nested", allLookupStrings: "I, Nested", itemText: "I.Nested", tailText: " (p)" }
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierType5.kt

@@ -0,0 +1,16 @@
+package p
+
+open class A
+
+interface I {
+    interface Nested
+}
+
+class B : A(), I.Nested {
+    fun foo() {
+        super<I<caret>
+    }
+}
+
+// EXIST: { lookupString: "Nested", allLookupStrings: "I, Nested", itemText: "I.Nested", tailText: " (p)" }
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierType6.kt

@@ -0,0 +1,17 @@
+package p
+
+open class A
+
+interface I {
+    interface Nested1
+    interface Nested2
+}
+
+class B : A(), I.Nested1 {
+    fun foo() {
+        super<I.<caret>
+    }
+}
+
+// EXIST: Nested1
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierTypeAny.kt

@@ -0,0 +1,11 @@
+interface I
+
+class B : I {
+    fun foo() {
+        super<<caret>
+    }
+}
+
+// EXIST: Any
+// EXIST: I
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierTypeAnyInInterface.kt

@@ -0,0 +1,11 @@
+interface X
+
+interface I : X {
+    fun foo() {
+        super<<caret>
+    }
+}
+
+// EXIST: Any
+// EXIST: X
+// NOTHING_ELSE

idea/idea-completion/testData/basic/common/super/QualifierTypeGeneric.kt

@@ -0,0 +1,11 @@
+open class A<T>
+
+interface I
+
+class B : A<String>(), I {
+    fun foo() {
+        super<<caret>
+    }
+}
+
+// EXIST: { itemText: "A", tailText: " (<root>)" }