Initial support for class usages replacement with ReplaceWith

idea/testData/quickfix/deprecatedSymbolUsage/classUsages/addImportFromSamePackage.before.Main.kt

@@ -0,0 +1,7 @@
+// "Replace with 'NewClass'" "true"
+
+import dependency.OldClass
+
+fun foo(): <caret>OldClass? {
+    return null
+}