feat: Add HeadquartersLocationInput component

src/components/admin/index.ts

@@ -1,6 +1,7 @@
 // Admin components barrel exports
 export { AdminPageLayout } from './AdminPageLayout';
 export { DesignerForm } from './DesignerForm';
+export { HeadquartersLocationInput } from './HeadquartersLocationInput';
 export { LocationSearch } from './LocationSearch';
 export { ManufacturerForm } from './ManufacturerForm';
 export { MarkdownEditor } from './MarkdownEditor';