feat: Refactor header menu and social link controllers to use RESTful method names, remove social link API routes, and add comprehensive social link management to admin routes.

controllers/socialLinkController.js

@@ -1,7 +1,7 @@
 const Header = require("../models/header");
 
 // Get all social links
-exports.getAll = async (req, res) => {
+exports.index = async (req, res) => {
     try {
         const header = await Header.findOne({ status: "active" }).sort({ order: 1 });
 
@@ -262,7 +262,7 @@ exports.destroy = async (req, res) => {
 };
 
 // Bulk update social links (used for reordering and batch updates)
-exports.bulkUpdate = async (req, res) => {
+exports.reorder = async (req, res) => {
     try {
         const { socialLinks } = req.body;