feat: add plausible analytics

Author: openscript

src/layouts/default/Document.tsx

@@ -1,3 +1,4 @@
+import { Script } from 'gatsby';
 import { Fragment } from 'react';
 
 type DocumentProps = {
@@ -9,6 +10,8 @@ export function Document({ metaData }: DocumentProps) {
     <Fragment>
       <title key="pageTitle">{metaData.title}</title>
       <meta key="pageDescription" name="description" content={metaData.description} />
+      <meta name="referrer" content="no-referrer-when-downgrade" />
+      <Script id="analytics" defer data-domain="openscript.ch" src="https://analytics.obin.ch/js/script.js" />
     </Fragment>
   );
 }