add: lp and navigation

Added... a lot of stuff

app/composables/navigation.ts

@@ -0,0 +1,24 @@
+import { ref } from 'vue'
+
+const isNavigationVisible = ref(false)
+
+export const useNavigation = () => {
+  const toggleNavigation = () => {
+    isNavigationVisible.value = !isNavigationVisible.value
+  }
+
+  const showNavigation = () => {
+    isNavigationVisible.value = true
+  }
+
+  const hideNavigation = () => {
+    isNavigationVisible.value = false
+  }
+
+  return {
+    isNavigationVisible,
+    toggleNavigation,
+    showNavigation,
+    hideNavigation
+  }
+}