chore: Add CI with Github Actions

.github/workflow/ci.yml

@@ -0,0 +1,59 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  setup:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '20'
+          cache: 'yarn'
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+  lint:
+    needs: setup
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '20'
+          cache: 'yarn'
+      - name: Lint
+        run: yarn lint
+
+  test:
+    needs: setup
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '20'
+          cache: 'yarn'
+      - name: Unit tests
+        run: yarn test
+
+  build:
+    needs: [lint, test]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '20'
+          cache: 'yarn'
+      - name: Build app
+        run: yarn build