switch to JSONAPI for suppliers

app/controllers/employees/employee_shifts_controller.rb

@@ -2,7 +2,7 @@ module Employees
   class EmployeeShiftsController < Employees::ApplicationController
     def index
       @employee_shifts = EmployeeShift.for_employee(current_employee).include_relation(:supplier)
-      render json: @employee_shifts, each_serializer: Employees::EmployeeShiftSerializer
+      render json: JSONAPI::Serializer.serialize(@employee_shifts, serializer: Employees::EmployeeShiftSerializer, is_collection: true)
     end
   end
 end

app/controllers/employees/suppliers_controller.rb

@@ -2,7 +2,7 @@ module Employees
   class SuppliersController < Employees::ApplicationController
     def index
       @suppliers = current_employee.suppliers
-      render json: @suppliers, each_serializer: Employees::SupplierSerializer
+      render json: JSONAPI::Serializer.serialize(@suppliers, serializer: Employees::SupplierSerializer, is_collection: true)
     end
   end
 end

app/controllers/suppliers/lists_controller.rb

@@ -23,6 +23,7 @@ module Suppliers
 
       render json: JSONAPI::Serializer.serialize(@lists, serializer: Suppliers::ListSerializer, is_collection: true, include: %w[
         orders
+        orders.list
         orders.product_orders
         orders.product_orders.order
         orders.product_orders.product