feat: added settings api on beackend

backend/src/models/Setting.js

@@ -0,0 +1,24 @@
+const Sequelize = require("sequelize");
+
+class Setting extends Sequelize.Model {
+	static init(sequelize) {
+		super.init(
+			{
+				key: {
+					type: Sequelize.STRING,
+					primaryKey: true,
+					allowNull: false,
+					unique: true,
+				},
+				value: { type: Sequelize.TEXT, allowNull: false },
+			},
+			{
+				sequelize,
+			}
+		);
+
+		return this;
+	}
+}
+
+module.exports = Setting;