Add new seeder, add new public const variable for 1668, update code in CreateBookingLogic for 1688 booking flow

database/seeds/AddServiceTypeSeeder.php

@@ -0,0 +1,25 @@
+<?php
+
+use Illuminate\Database\Seeder;
+
+class AddServiceTypeSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        \DB::table('service_types')->insert(array (
+            0 => 
+            array (
+                'name' => '1688',
+                'status' => '2',
+                'deleted_at' => NULL,
+                'created_at' => '2021-03-09 07:52:56',
+                'updated_at' => '2021-03-09 09:57:40',
+            )
+        ));
+    }
+}