Add "Add getter/setter" quick fix for uninitialized property

#KT-30078 Fixed

idea/testData/quickfix/addPropertyAccessors/varHasGetter.kt

@@ -0,0 +1,7 @@
+// "Add setter" "true"
+class Test {
+    var x: Int<caret>
+        get() {
+            return 1
+        }
+}