added ctc fetch to bulk salary assignment

jey_erp/custom_fields.py

@@ -299,7 +299,13 @@ def create_custom_fields():
                 label='Note',
                 fieldtype='Data',
                 insert_after='status'
-            )
+            ),
+            dict(
+                fieldname='purpose',
+                label='Purpose',
+                fieldtype='Small Text',
+                insert_after='payment_type',
+            ),
         ],
         "Purchase Order": [
             dict(