Add annotation for result formatter

[code4craft]

Some times we need to add some text before or after extracted result, such as "ID"+id for field String id, or fill more than one result in a single field, such as name1+"|"+name2 for field name. Add a annotation like that:

@Formatter(value=@ExtractBy("//div[@id='id']"),template="ID%s")
private String id;

[code4craft]

Move these feature to Woody