feat: add browse courses page with search and filtering functionality, and create the main landing page.

Frontend-Learner/pages/browse/index.vue

@@ -216,7 +216,7 @@ const filteredCourses = computed(() => {
           to="/auth/register" 
           class="inline-flex items-center gap-3 px-10 py-5 bg-gradient-to-r from-blue-600 to-indigo-600 hover:from-blue-500 hover:to-indigo-500 text-white rounded-2xl text-lg font-black shadow-2xl shadow-blue-900/40 hover:scale-105 transition-all duration-300"
         >
-          <span>🚀</span>
+          <span></span>
           <span>สมัครสมาชิกฟรี</span>
         </NuxtLink>
       </div>