Add better footer

Author: brianc

docs/theme.config.js

@@ -15,7 +15,20 @@ export default {
     next: true,
   },
   footer: {
-    text: `MIT ${new Date().getFullYear()} © Brian Carlson.`,
+    content: (
+      <span>
+        As of 2026-03-01 I am taking a break from the workforce to focus entirely on this project! Please consider{' '}
+        <a
+          href="https://github.com/sponsors/brianc"
+          target="_blank"
+          rel="noopener noreferrer"
+          style={{ textDecoration: 'underline' }}
+        >
+          sponsoring this work on GitHub
+        </a>
+        !
+      </span>
+    ),
   },
   editLink: {
     text: 'Edit this page on GitHub',