Add gember packages

Author: Jeroen de Graaf

composer.json

@@ -22,7 +22,15 @@
     ],
     "require": {
         "php": "^8.3",
-        "symfony/http-kernel": "^7.1"
+        "symfony/http-kernel": "^7.1",
+        "gember/event-sourcing": "dev-main",
+        "gember/rdbms-event-store-doctrine-dbal": "dev-main",
+        "gember/cache-psr": "dev-main",
+        "gember/file-finder-symfony": "dev-main",
+        "gember/file-reflector-roave": "dev-main",
+        "gember/identity-generator-symfony": "dev-main",
+        "gember/message-bus-symfony": "dev-main",
+        "gember/serializer-symfony": "dev-main"
     },
     "require-dev": {
         "captainhook/captainhook": "^5.23",