feat: add multiple payment events to user profile

- Added logic to handle multiple payment events in a user's profile
- Created a new PaymentEvent model and associated it with the EinundzwanzigPleb model
- Added a new migration for creating the payment_events table in the database
- Updated the profile.blade.php view to display all payment events for a user

app/Models/PaymentEvent.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class PaymentEvent extends Model
+{
+    protected $guarded = [];
+}