Kapt: add some JeElement tests

(cherry picked from commit 948a4b6)

plugins/annotation-processing/testData/kotlinWrappers/nestedClasses.kt

@@ -0,0 +1,30 @@
+// MyClass
+
+class MyClass {
+    companion object {
+        val CONST = 2
+    }
+    
+    fun myClassFun() {}
+    
+    class NestedClass {
+        companion object A {
+            val CONSTA = 3
+        }
+        
+        fun nestedClassFun() {}
+        
+        class NestedNestedClass {
+            fun nestedNestedClassFun() {}
+        }
+    }
+    
+    inner class InnerClass {
+        fun innerClassFun() {}
+    }
+    
+    interface InnerInterface {
+        fun innerInterfaceFun()
+        fun innerInterfaceFunWithImpl() = 5
+    }
+}