feat: usos sign-in, private calendar feed and timetable archive

docker-compose.override.yml.example

@@ -0,0 +1,11 @@
+services:
+  api:
+    networks:
+      default: {}
+      caddy:
+        aliases:
+          - usoscal-api
+
+networks:
+  caddy:
+    external: true