th-243: Add possibility accept/decline order (#264)

* th-243: + controler/service for change order status

* th-243: + socket event for this case

* th-243: * swager

* th-243: * order service

* th-243: * comments

* th-243: * backend part

* th-243: + socket for update status

* th-243: * comments

* th-243: * type

* th-243: * comments

Author: MaxHopaytsa

backend/src/libs/packages/database/generated-schema/0014_add_rejected_status_to_orders.sql

@@ -0,0 +1,2 @@
+ALTER TYPE "order_status"
+ADD VALUE 'rejected';