ci: swapped TravisCI for GitHub Actions

.github/workflows/main.yml

@@ -0,0 +1,45 @@
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 14.x
+      - run: yarn install --frozen-lockfile
+      - run: yarn lint
+      - run: yarn stylelint
+      - run: yarn prettier
+      - run: yarn build
+      - run: yarn test
+  deploy:
+    runs-on: ubuntu-20.04
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 14.x
+      - run: yarn install --frozen-lockfile
+      - run: yarn build
+        env:
+          FIREBASE_API_KEY: ${{ secrets.FIREBASE_API_KEY }}
+          FIREBASE_AUTH_DOMAIN: ${{ secrets.FIREBASE_AUTH_DOMAIN }}
+          FIREBASE_DATABASE_URL: ${{ secrets.FIREBASE_DATABASE_URL }}
+          FIREBASE_PROJECT_ID: ${{ secrets.FIREBASE_PROJECT_ID }}
+          FIREBASE_STORAGE_BUCKET: ${{ secrets.FIREBASE_STORAGE_BUCKET }}
+          FIREBASE_MESSAGING_SENDER_ID: ${{ secrets.FIREBASE_MESSAGING_SENDER_ID }}
+          FIREBASE_APP_ID: ${{ secrets.FIREBASE_APP_ID }}
+          FIREBASE_MEASUREMENT_ID: ${{ secrets.FIREBASE_MEASUREMENT_ID }}
+      - uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./dist
+          force_orphan: true