GHA for crowdin (WIP) (#731)

* feat: add crowdin and supported languages

* fix: main branch name

* feat: test crowdin integration

.github/workflows/crowdin.yml

@@ -0,0 +1,27 @@
+name: Crowdin Action
+
+on:
+  push:
+    branches:
+      - main
+      # Testing
+      - feat/i18n-crowdin
+
+jobs:
+  synchronize-with-crowdin:
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: crowdin action
+      uses: crowdin/github-action@1.4.0
+      with:
+        upload_translations: true
+        download_translations: true
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
+        CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}