Reserve "async* {}", extend the quick-fix

idea/testData/quickfix/asyncUnsupported/asyncWithTimes.kt

@@ -0,0 +1,8 @@
+// "Migrate unsupported async syntax" "true"
+object async {
+    operator fun times(f: () -> Unit) = f()
+}
+
+fun test() {
+    asy<caret>nc* {  }
+}