add github actions

.github/actions/setup/action.yml

@@ -0,0 +1,14 @@
+name: Setup
+
+runs:
+  using: 'composite'
+  steps:
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 20
+        cache: 'npm'
+
+    - run: npm ci --ignore-scripts --no-audit
+      shell: bash

.github/workflows/ci-cd.yml

@@ -0,0 +1,32 @@
+name: CI/CD
+
+on: push
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: ./.github/actions/setup@${{ github.ref }}
+
+      - run: npm run format:check
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: ./.github/actions/setup@${{ github.ref }}
+
+      - run: npm run lint:check
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: ./.github/actions/setup@${{ github.ref }}
+
+      - run: npm run test
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: ./.github/actions/setup@${{ github.ref }}
+
+      - run: npm run build