(#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

src/components/admin.js

@@ -1,3 +1,5 @@
+import { get_rest_url } from '../../assets/js/RsvApi.js';
+
 async function fetch_reservations_to_confirm(object_id) {
   const url = `/wordpress/wp-json/reservations/v1/object/${object_id}/timetable/reservation/unconfirmed`;
   return await fetch(url, {
@@ -100,7 +102,7 @@ function create_notice(id, type, mesg) {
   return container;
 }
 
-function show_notice(target, type, mesg) {
+export function show_notice(target, type, mesg) {
   target.querySelectorAll('.notice').forEach(x => x.remove());
   const notice = create_notice('test', type, mesg);
   target.prepend(notice);