feat: add static navigation island plugin

docs/.vitepress/theme/PluginsList.vue

@@ -1,9 +1,9 @@
 <template>
+<small>From newest to oldest ↓</small>
   <div class="plguins-list">
     <noscript>
       <small>To use the filter you need JavaScript to be enabled.</small>
     </noscript>
-    <small>From newest to oldest ↓</small>
     <div class="filter-tags">
       <button @click="filterplugins('')" id="all-tags">All</button>
       <button v-for="tag in uniqueTags" :key="tag" @click="filterplugins(tag)">

docs/plugins/posts/static-navigation-island.md

@@ -0,0 +1,31 @@
+---
+layout: article
+title: Static Navigation Island
+description: Make your navigation not be fixed to the screen when scrolling.
+date: 2024-07-24T21:56:00+03:00
+author:
+  - Gabriel Cozma
+tags:
+  - Navigation
+banner: /images/plugins/static-nav.png
+prev: Numeric Headings
+---
+
+If you want your navigation island to not be fixed to the screen when scrolling, you can apply this plugin. To add the plugin, simply add the plugin's name to the `plugins` array in the `config.mts` file. The plugin will be automatically added to the navigation.
+
+![Screenshot of how such an navigation would look (looks the same as deafult)](/images/plugins/static-nav.png#shadow)
+
+
+Plugin Name:
+
+```txt
+static-nav
+```
+
+## Example of the Configuration
+
+```ts
+  plugins: [
+    "static-nav",
+  ],
+```