feat(frontend): use custom font

frontend/src/routes/+layout.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import "bootstrap/dist/css/bootstrap.min.css";
   import "bootstrap-icons/font/bootstrap-icons.css";
+  import "./main.css";
 
   import Navigation from "./nav/Navigation.svelte";
   import type { LayoutData } from "./$types";
@@ -45,8 +46,9 @@
           {data.git_commit}
         </a>)
       {/if} &middot;
-      <a href="/page/terms">Terms of service</a>
-      - <a href="/page/privacy">Privacy policy</a>
+      <a href="/page/about">About & contact</a> &middot;
+      <a href="/page/terms">Terms of service</a> &middot;
+      <a href="/page/privacy">Privacy policy</a>
     </p>
   </footer>
 </div>

frontend/src/routes/main.css

@@ -0,0 +1,5 @@
+@import url("https://free.bboxtype.com/embedfonts/?family=FiraGO:400,400i,700,700i");
+
+body {
+  font-family: "FiraGO", sans-serif;
+}