Add invoice event docs

docs/developer/events/customer.md

@@ -11,7 +11,7 @@ This is triggered when a customer is created.
 
 | Name | Constant For Name |
 | --- | --- |
-| billabear.customer.created | `BillaBear\Entity\Customer::NAME` |
+| billabear.customer.created | `BillaBear\Event\Customer\CustomerCreated::NAME` |
 
 ### Event Class
 

docs/developer/events/invoice.md

@@ -0,0 +1,59 @@
+---
+title: BillaBear Invoice Events
+sidebar_label: Invoice
+sidebar_position: 2
+---
+Here is the information relating to events relating to Invoices
+
+## Invoice Created
+
+This is triggered when an invoice is created.
+
+| Name | Constant For Name |
+| --- | --- |
+| billabear.invoice.created | `BillaBear\Event\Invoice\InvoiceCreated::NAME` |
+
+### Event Class
+
+```php
+namespace BillaBear\Event\Invoice;
+
+use BillaBear\Entity\Invoice;
+use Symfony\Contracts\EventDispatcher\Event;
+
+class InvoiceCreated extends Event
+{
+    public const string NAME = 'billabear.invoice.created';
+
+    public function __construct(public readonly Invoice $invoice)
+    {
+    }
+}
+```
+
+## Invoice Paid
+
+This is triggered when an invoice is paid.
+
+| Name | Constant For Name |
+| --- | --- |
+| billabear.invoice.paid | `BillaBear\Event\Invoice\InvoicePaid::NAME` |
+
+### Event Class
+
+```php
+namespace BillaBear\Event\Invoice;
+
+use BillaBear\Entity\Invoice;
+use Symfony\Contracts\EventDispatcher\Event;
+
+class InvoicePaid extends Event
+{
+    public const string NAME = 'billabear.invoice.paid';
+
+    public function __construct(public readonly Invoice $invoice)
+    {
+    }
+}
+
+```