Add workflow folder

.github/workflows/create-crowdin-project.yml

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+name: Create Crowdin project
+
+on:
+  workflow_dispatch:
+
+jobs:
+  crowdin-create:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Create crowdin project
+        uses: crowdin/github-action@v2
+        with:
+          command: "project add"
+          command_args: "RPF-Project-${{ github.event.repository.name }} -l fr -l nl -l de -l hi -l it -l ja -l pt-BR -l es-419 -l uk"
+        env:
+          CROWDIN_API_TOKEN: ${{ secrets.CROWDIN_API_TOKEN }}
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}

.github/workflows/download-translations.yml

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+name: Crowdin Download Action
+
+on:
+  schedule:
+    # Run every day at 1 AM UTC
+    - cron: "0 1 * * *"
+  workflow_dispatch: # Manual triggering
+
+concurrency:
+  group: crowdin-download
+  cancel-in-progress: true
+
+permissions: write-all
+
+jobs:
+  crowdin:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: master
+
+      - name: Synchronize with Crowdin
+        uses: crowdin/github-action@v2
+        with:
+          upload_sources: false
+          upload_translations: false
+          download_translations: true
+          localization_branch_name: l10n_crowdin_translations
+          create_pull_request: true
+          pull_request_title: "New Crowdin translations"
+          pull_request_body: "New Crowdin pull request with translations"
+          pull_request_base_branch_name: "master"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_API_TOKEN: ${{ secrets.CROWDIN_API_TOKEN }}

.github/workflows/hide-strings.yml

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+name: Crowdin Hide Strings
+
+on:
+  workflow_run:
+    workflows: ["Crowdin Upload Action"]
+    types:
+      - completed
+
+jobs:
+  crowdin-upload:
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Crowdin CLI
+        run: |
+          curl -L https://github.com/crowdin/crowdin-cli/releases/latest/download/crowdin-cli.zip -o crowdin-cli.zip
+          unzip crowdin-cli.zip -d crowdin-cli
+          mkdir -p ~/bin
+          mv crowdin-cli/*/crowdin ~/bin/crowdin
+          cp crowdin-cli/*/crowdin-cli.jar ~/bin/crowdin-cli.jar
+          chmod +x ~/bin/crowdin
+          echo "PATH=$HOME/bin:$PATH" >> $GITHUB_ENV
+
+      - name: Hide matching strings
+        run: |
+          crowdin --version
+          crowdin string list --verbose | grep -E -- '--- /no-print ---|--- no-print|--- print-only|hero_image images/' | awk '{print $1}' | sed 's/^#//' | grep '^[0-9]\+$'
+          while read -r id; do
+            crowdin string edit "$id" --hidden
+          done
+        env:
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_API_TOKEN: ${{ secrets.CROWDIN_API_TOKEN }}

.github/workflows/nttt-processing.yml

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+name: NTTT processing
+
+on:
+  # currently allowing manual trigger only
+  workflow_dispatch:
+    inputs:
+      branch:
+        description: 'Branch to process translations on'
+        required: false
+        default: 'l10n_crowdin_translations'
+        type: string
+
+permissions: write-all
+
+jobs:
+  nttt-processing:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.branch || 'l10n_crowdin_translations'}}
+
+      - name: Set up Python 3.11
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11.0'
+
+      - name: Install NTTT from GitHub repository
+        run: |
+          python -m pip install --upgrade pip
+          pip install git+https://github.com/raspberrypilearning/nttt.git
+
+      - name: Run NTTT on all language directories except 'en'
+        run: |
+          for lang_dir in */; do
+            if [[ -d "$lang_dir" && "$lang_dir" != "en/" ]]; then
+              lang_code=$(basename "$lang_dir")
+              echo "Processing language: $lang_code"
+              cd "$lang_dir"
+              printf "y\n" | nttt -Y YES || true
+              cd ..
+            fi
+          done
+
+      - name: Add changes to branch
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action - NTTT Processing"
+          git add .
+          if git diff --staged --quiet; then
+            echo "No changes after NTTT processing"
+          else
+            git commit -m "Apply NTTT processing to translations"
+            git push origin HEAD:${{ inputs.branch || 'l10n_crowdin_translations'}}
+          fi
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/upload-sources.yml

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+name: Crowdin Upload Action
+
+on:
+  pull_request:
+    types: [closed]
+    branches:
+      - master
+    paths: ["en/**/*.*"]
+
+jobs:
+  crowdin-upload:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Crowdin push
+        uses: crowdin/github-action@v2
+        with:
+          upload_sources: true
+          upload_translations: false
+          download_translations: false
+        env:
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_API_TOKEN: ${{ secrets.CROWDIN_API_TOKEN }}