Initial support for class usages replacement with ReplaceWith

idea/testData/quickfix/deprecatedSymbolUsage/classUsages/simple.kt

@@ -0,0 +1,10 @@
+// "Replace with 'NewClass'" "true"
+
+@deprecated("", ReplaceWith("NewClass"))
+class OldClass
+
+class NewClass
+
+fun foo(): OldClass<caret>? {
+    return null
+}