Function create

create(params?): Promise<JMapContext>
JMap.MapContext.create

Creates a map context. The map-context creation is persisted server-side.

You just need to provide the context meta-data (= data that describe the context).

The current map context will be saved.
Parameters
- Optional params: JMapContextMetaData
  the complete map context meta-data
Returns Promise<JMapContext>
the created map context, with it's id
Throws
if invalid map context data provided, or server request error

Example
```
// create a new map-context
JMap.MapContext
   .create({
     title: "My city",
     description: "My city description",
     shareLink: false
   })
   .then(mapContext => console.info(`Map context id={mapContext.id} created !`))
   .catch(error => console.error(error))
```