ci: add GitHub Actions workflows

.github/workflows/release.yml

@@ -0,0 +1,23 @@
+name: Release
+
+on:
+  workflow_run:
+    workflows: ["Run Tests"]
+    branches: [master]
+    types:
+      - completed
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: npm i -g pnpm && pnpm i
+      - run: mkdir -p docs
+      - name: Semantic Release
+        id: semrel
+        uses: cycjimmy/semantic-release-action@v3
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/tests.yml

@@ -0,0 +1,30 @@
+name: Run Tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: [ 10, 11, 12, 14, 15, 16, 17, 18 ]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+      - run: npm install
+      - run: npm test
+  sonar:
+    name: SonarQube
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: SonarCloud Scan
+        uses: sonarsource/sonarcloud-github-action@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}