ELEMENTS-1429: add crowdin sync workflow

.github/workflows/crowdin.yaml

@@ -0,0 +1,53 @@
+# Workflow that syncronizes translations from Crowdin
+name: Crowdin Sync
+
+on:
+  # Check for updates every day
+  schedule:
+    - cron: '0 0 * * *'
+
+  # Sync when a commit is done on maintenance-3.0.x
+  push:
+    branches:
+      - maintenance-3.0.x
+    paths:
+      - 'ui/i18n/messages.json'
+
+jobs:
+  crowdin:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Crowdin Action
+        uses: crowdin/[email protected]
+        with:
+          # Tokens
+          project_id: ${{ secrets.CROWDIN_PROJECT_ID }}
+          token: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}
+          # Load external configuration file (to support translation rename)
+          config: crowdin-conf.yml
+
+          # Upload sources for translation
+          upload_sources: true
+
+          # Auto-approve reference sentences we are pushing (english)
+          auto_approve_imported: true
+
+          # Name of the branch where to merge the translations
+          localization_branch_name: maintenance-3.0.x
+
+          # The commit message
+          commit_message: 'Automatic update of translations from Crowdin'
+
+          # Automatically download all the new translations
+          download_translations: true
+
+          # User properties
+          github_user_name: nuxeo-web-ui-jx-bot
+          github_user_email: [email protected]
+
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

crowdin-conf.yml

@@ -0,0 +1,14 @@
+"preserve_hierarchy": true
+"files": [
+  {
+    "source": "/ui/i18n/messages.json",
+    "translation": "/ui/i18n/messages-%two_letters_code%.json",
+    "translation_replace": {
+      "-es": "-es-ES",
+      "-pt": "-pt-PT",
+      "-sv": "-sv-SE",
+      "-zh": "-zh-CN",
+    },
+    "dest" : "/nuxeo-ui-elements/messages.json",
+  }
+]