feat: add queue and assoc with whatsapps

backend/src/database/migrations/20210108164504-add-queueId-to-tickets.ts

@@ -0,0 +1,16 @@
+import { QueryInterface, DataTypes } from "sequelize";
+
+module.exports = {
+  up: (queryInterface: QueryInterface) => {
+    return queryInterface.addColumn("Tickets", "queueId", {
+      type: DataTypes.INTEGER,
+      references: { model: "Queues", key: "id" },
+      onUpdate: "CASCADE",
+      onDelete: "SET NULL"
+    });
+  },
+
+  down: (queryInterface: QueryInterface) => {
+    return queryInterface.removeColumn("Tickets", "queueId");
+  }
+};