Add server script to package.json for building and serving example server

Author: hotlong

package.json

@@ -20,6 +20,7 @@
     "dev:console": "pnpm --filter @object-ui/console dev",
     "dev:crm": "pnpm --filter @object-ui/example-crm start",
     "build": "turbo run build",
+    "server": "pnpm --filter @object-ui/example-server build && pnpm --filter @object-ui/example-server serve",
     "pretest": "turbo run build --filter=@object-ui/types --filter=@object-ui/core --filter=@object-ui/react --filter=@object-ui/components --filter=@object-ui/fields --filter=@object-ui/layout --filter=@object-ui/plugin-kanban --filter=@object-ui/plugin-charts --filter=@object-ui/plugin-form --filter=@object-ui/plugin-grid --filter=@object-ui/plugin-dashboard",
     "test": "turbo run test",
     "test:root": "vitest run",