ci: migrate to github action

.github/workflows/main.yml

@@ -0,0 +1,34 @@
+# This is the main workflow file. It is run every time a PR is merged
+# Required env:
+# NPM_TOKEN
+# GITHUB_TOKEN
+name: Main workflow
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  publish:
+    name: Publish
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout the repository
+      - uses: actions/checkout@v2
+      # Setup the node environment
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+      # Cache dependencies
+      - uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+      # Install dependencies
+      - run: npm ci --prefer-offline
+      # Release npm package
+      - run: npm run semantic-release
+        env:
+          NPM_TOKEN: ${{secrets.NPM_TOKEN}}
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}