move platform dfa to separate folder

Author: PandaeDo

process/folder_templates/index.rst

@@ -25,3 +25,4 @@ Folder Templates
    features/index.rst
    modules/index.rst
    tools/index.rst
+   platform/index.rst

process/folder_templates/platform/index.rst

@@ -0,0 +1,23 @@
+..
+   # *******************************************************************************
+   # Copyright (c) 2024 Contributors to the Eclipse Foundation
+   #
+   # See the NOTICE file(s) distributed with this work for additional
+   # information regarding copyright ownership.
+   #
+   # This program and the accompanying materials are made available under the
+   # terms of the Apache License Version 2.0 which is available at
+   # https://www.apache.org/licenses/LICENSE-2.0
+   #
+   # SPDX-License-Identifier: Apache-2.0
+   # *******************************************************************************
+
+.. _platform_template:
+
+Platform
+========
+
+.. toctree::
+   :hidden:
+
+   safety_analysis/platform_dfa.rst