Registers a new server object extension file with the server. Before you register the file, you need
to upload the .SOE file to the server using the Upload Data Item operation. The itemID
returned by the upload operation must be passed to the register operation.
This operation registers all the server object extensions defined in the .SOE file.
Note:-
Upload a .SOE file:
http://server:port/arcgis/admin/uploads/upload
itemFile=<soe_file> //THIS MUST BE A MULTIPART POST REQUEST
Register the .SOE file:
http://server:port/arcgis/services/types/extensions/register
id=<id_of_uploaded_item>