stats: add privacy policy

Author: avivace

website/.vuepress/layouts/Layout.vue

@@ -7,7 +7,8 @@ import ParentLayout from '@vuepress/theme-default/layouts/Layout.vue'
     <template #page-bottom>
       <div class="my-footer">
         <hr>
-        <a href="/contribute.html">Sponsors </a><br>
+        <a href="/privacypolicy.html">Privacy Policy </a> - 
+        <a href="/donate.html#sponsoring">Sponsors </a><br>
         <a href="https://www.digitalocean.com/" target="_blank"><img class="sponsor_logo" src="../public/images/DO_Powered_by_Badge_blue.svg"/></a>
         <a href="https://incube8games.com/" target="_blank" alt="Incube8 Games - Physical Retro Gaming Publisher"><img alt="Incube8 Games - Physical Retro Gaming Publisher" class="sponsor_logo incube8" src="../public/images/Incube8-Games-Logo.png"/></a>
       </div>

website/privacypolicy.md

@@ -0,0 +1,16 @@
+---
+sidebar: false
+editLink: false
+---
+
+# Privacy Policy
+
+We use a self hosted instance of [Matomo](https://en.wikipedia.org/wiki/Matomo_(software)), a free and open source web analytics application to track online visits to our websites (`*.gbdev.io`), in order to better understand which audience we serve and what content is consulted.
+
+### How
+
+- Visitors' IP addresses are **anonymized**. The last byte is masked and fully qualified addressess **never** reach Matomo.
+- User IDs are replaced by **pseudonyms** to avoid directly storing and displaying personally identifiable information.
+- We ignore any existing tracking cookie and our tracking **doesn't use any cookie**.
+- We honor your browser "I do not want to be tracked" preference.
+- Data is aggregated and reports are compiled. Raw logs are regularly cleaned up.