🌐(i18n) create package i18n

We create a package i18n to manage the translations of the project.
It help us to extract the translations from the frontend to
be deployed to crowdin.
It also help us to format the translations from crowdin to
be used by the frontend apps.

.github/workflows/people.yml

@@ -101,7 +101,7 @@ jobs:
 
   test-e2e:
     runs-on: ubuntu-latest
-    
+    timeout-minutes: 10
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -254,29 +254,59 @@ jobs:
       - name: Run tests
         run: ~/.local/bin/pytest -n 2
 
-  i18n-back:
+  i18n-crowdin:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+        
       - name: Install gettext (required to make messages)
         run: |
           sudo apt-get update
           sudo apt-get install -y gettext
+      
       - name: Install Python
         uses: actions/setup-python@v3
         with:
           python-version: '3.10'
+
       - name: Install development dependencies
         working-directory: src/backend
         run: pip install --user .[dev]
+
       - name: Generate the translation base file
         run: ~/.local/bin/django-admin makemessages --keep-pot --all
+        
       - name: Load sops secrets
         uses: rouja/actions-sops@main
         with:
           secret-file: .github/workflows/secrets.enc.env
           age-key: ${{ secrets.SOPS_PRIVATE }}
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18.x'
+          cache: 'yarn'
+          cache-dependency-path: src/frontend/yarn.lock
+
+      - name: Install dependencies
+        run: cd src/frontend/ && yarn install --frozen-lockfile
+
+      - name: Download sources from Crowdin to stay synchronized
+        run: |
+          docker run \
+          --rm \
+          -e CROWDIN_API_TOKEN=$CROWDIN_API_TOKEN \
+          -e CROWDIN_PROJECT_ID=$CROWDIN_PROJECT_ID \
+          -e CROWDIN_BASE_PATH=$CROWDIN_BASE_PATH \
+          -v "${{ github.workspace }}:/app" \
+          crowdin/cli:3.16.0 \
+          crowdin download sources -c /app/crowdin/config.yml
+      
+      - name: Extract the frontend translation
+        run: make frontend-i18n-extract
+      
       - name: Upload files to Crowdin
         run: |
           docker run \