Merge branch 'main' into develop/v2

Signed-off-by: Tobias Wolf <[email protected]>

# Conflicts:
#	composer.json
#	composer.lock
#	index.php
#	models/orderPageAbstract.php
#	psalm.xml
#	src/Cart.php
#	src/Gateways.php
#	src/Merx.php
#	src/ProductList.php
#	src/StripePayment.php
#	vendor/composer/installed.php

Author: tobiasfabian

SECURITY.md

@@ -0,0 +1,19 @@
+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 1.x.x   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+If you have discovered a vulnerability in Merx, please notify us immediately. We appreciate your efforts to disclose your findings responsibly and will endeavour to acknowledge your contributions.
+
+You can always contact us directly at [email protected].  
+If you want to encrypt your message, our GPG key is [B16C 5030 FBBE 4B5F F42D  5481 9764 B754 E615 732B](https://merx.wagnerwagner.de/pgp.asc).
+
+## Securing your Merx shop
+
+We have some security advices for using Merx:  
+https://merx.wagnerwagner.de/docs/security