build: support semantic relase (#234)

.github/workflows/release.yml

@@ -0,0 +1,36 @@
+# Copyright 2020 Google LLC
+#
+# 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.
+
+name: Release
+on:
+  push:
+    branches: [ master ]
+jobs:
+  release:
+    runs-on: ubuntu-latest    
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        token: ${{ secrets.SYNCED_GITHUB_TOKEN_REPO }} 
+    - name: Semantic Release
+      uses: cycjimmy/semantic-release-action@v2
+      with:
+        extra_plugins: |
+          "@semantic-release/commit-analyzer"
+          "@semantic-release/release-notes-generator"
+          "@semantic-release/git
+          "@semantic-release/github
+      env:
+        GH_TOKEN: ${{ secrets.SYNCED_GITHUB_TOKEN_REPO }}

.releaserc

@@ -0,0 +1,9 @@
+branches:
+  - master
+plugins:
+  - "@semantic-release/commit-analyzer"
+  - "@semantic-release/release-notes-generator"
+  - "@semantic-release/git"
+  - "@semantic-release/github"
+options:
+  debug: true