feat: add internal skg infinite canvas

deploy/nginx.conf

@@ -106,6 +106,17 @@ server {
         try_files $uri =404;
     }
 
+    location = /canvas {
+        return 308 /canvas/;
+    }
+
+    location /canvas/ {
+        auth_request /__auth;
+        error_page 401 = @login_redirect;
+        root /usr/share/nginx/html;
+        try_files $uri $uri/ /canvas/index.html;
+    }
+
     location = /skg-logo-black.svg {
         root /usr/share/nginx/html;
         try_files $uri =404;