Rename: Implement Rename conflict analysis for classes. Qualify class references to resove rename conflicts when possible

#KT-8611 Fixed
 #KT-8562 Fixed
(cherry picked from commit 8989ccc)

idea/testData/refactoring/rename/clashWithNestedClass/after/test/test.kt

@@ -0,0 +1,9 @@
+package test
+
+class A {
+    class C {
+        class C {
+            val c: A.C = A.C()
+        }
+    }
+}

idea/testData/refactoring/rename/clashWithNestedClass/before/test/test.kt

@@ -0,0 +1,9 @@
+package test
+
+class A {
+    class /*rename*/B {
+        class C {
+            val b: B = B()
+        }
+    }
+}

idea/testData/refactoring/rename/clashWithNestedClass/clashWithNestedClass.test

@@ -0,0 +1,6 @@
+{
+  "type": "MARKED_ELEMENT",
+  "mainFile": "test/test.kt",
+  "newName": "C",
+  "withRuntime": "true"
+}