Add CI with linters and formatters

.github/workflows/pr_check.yml

@@ -0,0 +1,45 @@
+name: Test linter and code formatter
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  lint:
+    strategy:
+      fail-fast: true
+
+    name: Run ESLint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '16.14.2'
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npm run lint
+
+  formatting:
+    name: Run Prettier
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '16.14.2'
+
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Run Prettier
+        run: npm run prettier

package.json

@@ -7,7 +7,8 @@
     "build": "next build",
     "start": "next start",
     "lint": "next lint",
-    "format": "npx prettier --write ."
+    "format": "npx prettier --write .",
+    "prettier": "npx prettier --check ."
   },
   "dependencies": {
     "@emotion/react": "^11.11.4",