Initial Nuxt frontend import

- Complete GGZ Ecademy Nuxt.js user portal
- Learning products browser and management
- Member management interface
- User authentication and roles
- Multi-language support (NL/EN)
- Vuex store for state management
- Component-based architecture

components/layout/SystemBar.vue

@@ -0,0 +1,10 @@
+<template>
+    <v-system-bar window light>
+      <v-icon>mdi-message</v-icon>
+      <span>10 unread messages</span>
+      <v-spacer></v-spacer>
+      <v-icon>mdi-minus</v-icon>
+      <v-icon>icon-checkmarkbox-blank-outline</v-icon>
+      <v-icon x-small>icon-close</v-icon>
+    </v-system-bar>
+</template>