Refactor code structure for improved readability and maintainability; optimize performance across multiple modules.

backend/models/community/user_block.js

@@ -0,0 +1,7 @@
+import { sequelize } from '../../utils/sequelize.js';
+import { DataTypes } from 'sequelize';
+
+export default sequelize.define('user_block', {
+  blockerId: { type: DataTypes.INTEGER, allowNull: false },
+  blockedId: { type: DataTypes.INTEGER, allowNull: false },
+}, { tableName: 'user_block', schema: 'community', underscored: true, timestamps: true });