chore: add GitHub Actions workflow to test builds

.github/workflows/run-checks.yml

@@ -0,0 +1,29 @@
+name: Run Checks
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  run-checks:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build React project
+        run: npm run build
+
+      - name: Run linter
+        run: npm run lint

.prettierignore

@@ -1,3 +1,4 @@
 build
 public/static
-node_modules
+node_modules
+*.yml

package.json

@@ -23,7 +23,8 @@
 		"postbuild": "cp build/index.html build/404.html",
 		"test": "react-scripts test",
 		"eject": "react-scripts eject",
-		"format": "npx prettier --write ."
+		"format": "npx prettier --write .",
+		"lint": "eslint src"
 	},
 	"eslintConfig": {
 		"extends": [