feat(threaded-replies): modify Annotations.js

Modify Annotations (src/api/Annotations.js) to implement Threaded Replies requirements

• modify getAnnotations function New param: shouldFetchReplies?: boolean if true add url param fields=replies

• modify getAnnotation function New param: shouldFetchReplies?: boolean if true add url param fields=replies

• modify updateAnnotation function New param status?: OPEN|RESOLVED|DELETED Include status field in PUT request

• create getAnnotationReplies function Returns an array of replies for a given annotation id.  

• create createAnnotationReply function Creates a reply for an annotation Request body:

{ message: “reply message” }