Improves code quality checks (#28)

Enables automated code checks on pull requests to main branch, including linting and testing.
This change aims to catch errors and inconsistencies early in the development process, ensuring higher code quality and maintainability.

Author: sensasi-delight

.github/workflows/code-check.yml

@@ -0,0 +1,29 @@
+name: Code check
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  lint-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run linter
+        run: npm run lint
+
+      - name: Run tests
+        run: npm test

.gitignore

@@ -44,4 +44,5 @@ next-env.d.ts
 .*
 !.editorconfig
 !.env.example
-!.prettierrc
+!.prettierrc
+!.github