fix: include libs directory in Electron build extraResources

The @automaker/* packages in server-bundle/node_modules are symlinks
pointing to ../../libs/. Without including the libs directory in
extraResources, these symlinks are broken in the packaged app,
causing 'Server failed to start' error on launch.

apps/ui/package.json

@@ -141,6 +141,10 @@
         "from": "server-bundle/node_modules",
         "to": "server/node_modules"
       },
+      {
+        "from": "server-bundle/libs",
+        "to": "server/libs"
+      },
       {
         "from": "server-bundle/package.json",
         "to": "server/package.json"