chore(ci): Add netlify config to have branch dependend node versions

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

netlify.toml

@@ -0,0 +1,6 @@
+# SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+[build.environment]
+	NODE_VERSION = "20"
+	NPM_VERSION = "10"