improve: introduce isort for linting Python imports (#1983)

api/fields/api_based_extension_fields.py

@@ -1,5 +1,4 @@
 from flask_restful import fields
-
 from libs.helper import TimestampField
 
 

api/fields/app_fields.py

@@ -1,5 +1,4 @@
 from flask_restful import fields
-
 from libs.helper import TimestampField
 
 app_detail_kernel_fields = {

api/fields/conversation_fields.py

@@ -1,5 +1,4 @@
 from flask_restful import fields
-
 from libs.helper import TimestampField
 
 

api/fields/data_source_fields.py

@@ -1,5 +1,4 @@
 from flask_restful import fields
-
 from libs.helper import TimestampField
 
 integrate_icon_fields = {

api/fields/document_fields.py

@@ -1,6 +1,5 @@
-from flask_restful import fields
-
 from fields.dataset_fields import dataset_fields
+from flask_restful import fields
 from libs.helper import TimestampField
 
 document_fields = {

api/fields/file_fields.py

@@ -1,5 +1,4 @@
 from flask_restful import fields
-
 from libs.helper import TimestampField
 
 upload_config_fields = {

api/fields/hit_testing_fields.py

@@ -1,5 +1,4 @@
 from flask_restful import fields
-
 from libs.helper import TimestampField
 
 document_fields = {

api/fields/installed_app_fields.py

@@ -1,5 +1,4 @@
 from flask_restful import fields
-
 from libs.helper import TimestampField
 
 app_fields = {

api/fields/message_fields.py

@@ -1,7 +1,6 @@
-from flask_restful import fields
-
-from libs.helper import TimestampField
 from fields.conversation_fields import message_file_fields
+from flask_restful import fields
+from libs.helper import TimestampField
 
 feedback_fields = {
     'rating': fields.String