export_examples script

Merge in WMN_TOOLS/matter from add_export_scripts to silabs

Squashed commit of the following:

commit 10ebc69d124c0eba7b3ddc6bade7cd6ce499da31
Author: jepenven-silabs <jean-francois.penven@silabs.com>
Date:   Mon May 30 13:49:51 2022 -0400

    export_examples

Author: jepenven-silabs

export_examples.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+#  Copyright (c) 2020 Silicon Labs
+
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+
+#      http://www.apache.org/licenses/LICENSE-2.0
+
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+USAGE="Export Matter Examples to a new Location : export_examples.sh <new location> <examples path> <matter_root>"
+
+if [ -z "$1" ]; then
+    echo "Missing export location"
+fi
+
+if [ -z "$2" ]; then
+    echo "Missing examples location"
+fi
+
+if [ -z "${MATTER_ROOT}" ]; then
+    if [ -z "$3" ]; then
+        echo "Cannot Export without the MATTER_ROOT"
+        exit 1
+    else
+        ROOT="$3"
+    fi
+else
+    ROOT="${MATTER_ROOT}"
+fi
+
+#1. copy folder examples and platfor/generated stuff
+CURRENT_DIR=$(pwd)
+mkdir -p $1
+
+rsync -a $2 $1 --exclude=third_party --exclude=build_overrides
+
+#2. Symlink build scripts
+if [ -f "$1/../build_silabs_examples.sh" ]; then
+    echo "Build scripts already linked"
+else
+    ln -s "${ROOT}/scripts/examples/gn_efr32_example.sh" "$1/../build_silabs_examples.sh"
+fi
+
+#3. symlink the buildoverride folder
+cd $1
+ln -s "${ROOT}/examples/build_overrides" "./efr32/build_overrides"
+
+#4 symlink the third_party to point to the actual location of the matter repo
+mkdir -p ./efr32/third_party
+cd ./efr32/third_party
+
+ln -s ${ROOT} ./connectedhomeip