Ajout des fichiers de configuration des environnements (demon, dev, prod) au .gitignore

environments/.gitignore

+
+/demo/backend/config/main-local.php
+/demo/common/config/main-local.php
+/demo/frontend/config/main-local.php
+/demo/producer/config/main-local.php
+
+/dev/backend/config/main-local.php
+/dev/common/config/main-local.php
+/dev/frontend/config/main-local.php
+/dev/producer/config/main-local.php
+
+/prod/backend/config/main-local.php
+/prod/common/config/main-local.php
+/prod/frontend/config/main-local.php
+/prod/producer/config/main-local.php