Function: `nearest_neighbor.sh` to find nearby features inside dh structure

[rburghol]

• Code: https://github.com/HARPgroup/meta_model/blob/main/scripts/misc/nearest_neighbor.sh
• Use: nearest_neighbor.sh hydrocode src_bundle target_bundle src_ftype target_ftype dbaddress dbname
• Ex: /opt/model/meta_model/scripts/misc/nearest_neighbor.sh A51083 landunit watershed cbp532_landseg vahydro dbase2 drupal.dh03