refactor: ♻️ move nsfw functionality into root component

src/App.vue

@@ -19,6 +19,9 @@ export default {
   components: { Navigation },
   data() {
     return {
+      nsfw: false,
+      isConfirmedHorny: false,
+      isWarn: false,
       routes: [
         { path: "/", name: "Home" },
         { path: "/general", name: "General" },
@@ -29,6 +32,13 @@ export default {
       ],
     };
   },
+  methods: {
+    showWarning() {
+      if (!this.isConfirmedHorny) {
+        this.isWarn = true;
+      }
+    },
+  }
 };
 </script>