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/EinundzwanzigPleb.php

@@ -22,4 +22,9 @@ class EinundzwanzigPleb extends Model
         return $this->hasOne(Profile::class, 'pubkey', 'pubkey');
     }
 
+    public function paymentEvents()
+    {
+        return $this->hasMany(PaymentEvent::class);
+    }
+
 }