Agree on basis for a JSON Schema for the proejct core

[dersenv]

here is the proposal (soon to be also on the wiki):

{
"$schema":"http://json-schema.org/draft-07/schema#",
"type":"object",
"required":[
"Project"
],
"properties":{
"Project":{
"$id":"#/properties/Project",
"$comment": "Definition as text to be replaced with a URL once available, can we use format:URL?",
"definition": "An explanation about the purpose of this instance.",
"type":"object",
"required":[
"projectCore"
],
"properties":{
"projectCore":{
"$id":"#/properties/Project/properties/projectCore",
"type":"object",
"required":[
"projectGUID"
,"projectName"
,"projectDescription"
,"projectWebPage"
,"projectStartDate"
,"projectEndDate"
,"projectDuration"
,"projectStatus"
],
"properties":{
"projectGUID":{
"$id":"#/properties/Project/properties/projectCore/properties/projectGUID"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":"string"
},
"projectName":{
"$id":"#/properties/Project/properties/projectCore/properties/projectName"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":"string"
},
"projectDescription":{
"$id":"#/properties/Project/properties/projectCore/properties/projectDescription"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":"string"
},
"projectWebPage":{
"$id":"#/properties/Project/properties/projectCore/properties/projectWebPage"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":"string"
,"examples":["http://.../csp/topics/..."]
},
"projectStartDate":{
"$id":"#/properties/Project/properties/projectCore/properties/projectStartDate"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":"string"
,"format": "date"
},
"projectEndDate":{
"$id":"#/properties/Project/properties/projectCore/properties/projectEndDate"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":["null","string"]
,"default":null
},
"projectDuration":{
"$id":"#/properties/Project/properties/projectCore/properties/projectDuration"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":"number"
,"minimum":0
,"default":0
},
"projectStatus":{
"$id":"#/properties/Project/properties/projectCore/properties/projectStatus"
,"definition": "An explanation about the purpose of this instance. Definition as text to be replaced with a URL once available."
,"type":"string"
,"enum": ["Planned", "Ongoing", "Ended"]

              }
           },
		   "additionalProperties": false
        }
     }
  }

}
}