Add worship leaders functionality: Introduce worship leaders management by adding routes, controllers, and CSV import capabilities. Update worship management UI to support .csv file uploads for worship services, enhancing data handling and user experience.

models/WorshipLeader.js

@@ -0,0 +1,32 @@
+const { DataTypes } = require('sequelize');
+
+module.exports = (sequelize) => {
+  const WorshipLeader = sequelize.define('WorshipLeader', {
+    code: {
+      type: DataTypes.STRING(32),
+      allowNull: false,
+      unique: true,
+    },
+    name: {
+      type: DataTypes.STRING(255),
+      allowNull: false,
+    },
+    aliases: {
+      // Comma-separated list of alternative codes (kept simple to avoid join tables).
+      type: DataTypes.STRING(512),
+      allowNull: true,
+      defaultValue: '',
+    },
+    active: {
+      type: DataTypes.BOOLEAN,
+      allowNull: false,
+      defaultValue: true,
+    },
+  }, {
+    tableName: 'worship_leaders',
+    timestamps: true,
+  });
+
+  return WorshipLeader;
+};
+