Farm and Field Post - determine if the farm or field exists by matching names (AGS-14577)

Benefits

Reduce time and effort to post farm and field payloads that do not include a GUID or the identifying land Id.
Prevent the creation of duplicate land records with the same name. The payload land name will determine if the land record (farm or field) exists. If the land record does exist, the land record will update.

This improvement will prevent the creation of any duplicate Farm and Field land records.