New annotations target for @Selector and @ReplyTo

New annotations target (ANNOTATION_TYPE) in order to allow the creation of stereotypes for @Selector and **@ReplyTo**.

With that modification, we can write something like : 

```java
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Selector(value = "test", eventBus = "@rootEventBus")
public @interface TestSelector {}
```