Added a changelog automatic update gh action

.github/workflows/automatic-changelog-update.yml

@@ -0,0 +1,53 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+
+name: Mvnd Changelog
+
+on:
+  schedule:
+    # Run at 3 during night
+    - cron:  '0 3 * * *'
+
+jobs:
+  generate_changelog:
+    runs-on: ubuntu-latest
+    name: Generate changelog for master branch
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Generate changelog
+        uses: charmixer/auto-changelog-action@v1.1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Commit files
+        env:
+          CI_USER: "github-actions[bot]"
+          CI_EMAIL: "41898282+github-actions[bot]@users.noreply.github.com"
+        run: |
+          git config --local user.email "$CI_EMAIL"
+          git config --local user.name "$CI_USER"
+          git add CHANGELOG.md && git commit -m 'Updated CHANGELOG.md' && echo ::set-env name=push::1 || echo "No changes to CHANGELOG.md"
+
+      - name: Push changes
+        if: env.push == 1
+        env:
+          CI_USER: "github-actions[bot]"
+          CI_EMAIL: "41898282+github-actions[bot]@users.noreply.github.com"
+          CI_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          git push "https://$CI_USER:$CI_TOKEN@github.com/$GITHUB_REPOSITORY.git" HEAD:master