Add the recipes data model. Add the service to add a recipe with a json format.

To test the json add recipe service type :
curl --header "Content-type: text/json" --request POST --data '{"name":"recipe1", "instructions":"instru1", "isPublic":true, "author":"sample@sample.com", "description":"descr1", "prepTimeSec":3600, "cookTimeSec":5200, "ingredientsIdQt":{"2000":30.2, "2004":20.6} }'  http://localhost:9000/recipe