(#1) - WebPack bundling of JS and CSS (#1)

This work was done with Claude.

Added bundling of CSS & JS with WebPack. This also means minimization.

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Co-authored-by: Martin Slachta <martin.slachta@outlook.com>
Reviewed-on: #1

assets/js/datasource/RsvReservationResource.js

@@ -1,2 +1,4 @@
-const RsvReservationResource = () =>
+import { RsvDataSource } from './RsvDataSource.js';
+
+export const RsvReservationResource = () =>
     RsvDataSource.create_rsv_resource(ReservairServiceAPI.restUrl + '/reservation');