feat: add QR code generator and Nostr event handling

- Added the `simplesoftwareio/simple-qrcode` package to the project
- Created a new JavaScript file `nostrZap.js` to handle Nostr events
- Added the `nostrZap` function to the Alpine.js data property in `app.js`
- Updated the `services.php` configuration file to include the `nostr` environment variable
- Created a new database migration to add a `payment_event` field to the `einundzwanzig_plebs` table
- Made adjustments in the `Election:year.blade.php` view file to handle potential null values
- Updated `composer.lock` and `package.json` with the new dependencies

resources/js/app.js

@@ -2,6 +2,7 @@ import {Alpine, Livewire} from '../../vendor/livewire/livewire/dist/livewire.esm
 
 import nostrApp from "./nostrApp.js";
 import nostrLogin from "./nostrLogin.js";
+import nostrZap from "./nostrZap.js";
 import electionAdminCharts from "./electionAdminCharts.js";
 
 import './bootstrap';
@@ -19,6 +20,7 @@ Alpine.store('nostr', {
 
 Alpine.data('nostrApp', nostrApp);
 Alpine.data('nostrLogin', nostrLogin);
+Alpine.data('nostrZap', nostrZap);
 Alpine.data('electionAdminCharts', electionAdminCharts);
 
 Livewire.start();