Add Crowdin Github Action

.github/workflows/crowdin-download.yml

@@ -0,0 +1,33 @@
+name: Download Crowdin Translations
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  crowdin:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - 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: "main"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

.github/workflows/crowdin-upload.yml

@@ -0,0 +1,23 @@
+name: Upload Crowdin Sources
+
+on:
+  push:
+    paths: ["html/i18n/**"]
+    branches: [main]
+
+jobs:
+  crowdin-upload:
+    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: true
+          download_translations: false
+        env:
+          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+          CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

crowdin.yml

@@ -1,3 +1,14 @@
+"project_id_env": "CROWDIN_PROJECT_ID"
+"api_token_env": "CROWDIN_PERSONAL_TOKEN"
+"base_path": "."
+"base_url": "https://api.crowdin.com"
+
+"preserve_hierarchy": true
+
 files:
-  - source: /html/i18n/en.json
-    translation: /%original_path%/%two_letters_code%.json
+  [
+    {
+      "source": "/html/i18n/en.json",
+      "translation": "/html/i18n/%two_letters_code%.json",
+    },
+  ]