add ci

.github/PULL_REQUEST_TEMPLATE.md

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+## Description
+
+Briefly describe the changes made in this Pull Request.
+
+## Additional context (optional)
+
+Add any additional context or information about the changes made in this PR.
+
+## How to test
+
+Provide clear and concise instructions on how to test the changes made in this PR.

.github/workflows/build.yml

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+name: Build and Test 🏗️
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        browser: [chrome, firefox, edge]
+    steps:
+      - name: Checkout code 📥
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js ⚙️
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'yarn'
+          cache-dependency-path: yarn.lock
+
+      - name: Install dependencies 📦
+        run: |
+          HUSKY=0 yarn install --prefer-offline --frozen-lockfile
+
+      - name: Lint code 🎨
+        run: |
+          yarn lint
+
+      - name: Build project 🏗️
+        run: |
+          yarn build
+
+      - name: Get number of CPU cores 💻
+        id: cpu-cores
+        uses: SimenB/github-actions-cpu-cores@v2
+
+      - name: Run Unit tests 🧪
+        run: |
+          yarn coverage --max-workers ${{ steps.cpu-cores.outputs.count }}
+
+      - name: Upload coverage to Codecov 📊
+        uses: codecov/codecov-action@v3
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}