Create crowdin-wf.yml

GitHub Actions Crowdin Workflow.
First run will be a dry run to check the configuration.
Then a run to put the already existing translations into Crowdin.
Then it will be configured for the hourly run.

.github/workflows/crowdin-wf.yml

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+name: Crowdin Action
+# Controls when the action will run. 
+on:
+  schedule:
+    - cron: '43 * * * *'
+  
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel  
+jobs:
+  # This workflow contains a single job called "build"
+  synchronize-with-crowdin:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+    - name: Checkout
+      uses: actions/checkout@v2
+    
+    # Runs the Crowdin action command - https://github.com/crowdin/github-action
+    - name: crowdin action
+      uses: crowdin/github-action@1.1.0
+      with:
+        # Upload sources to Crowdin
+        upload_sources: true
+        # Upload translations to Crowdin, only use true at initial run
+        upload_translations: true
+        # Make pull request of Crowdin translations
+        download_translations: false
+        # Only download translated strings
+        skip_untranslated_strings: false
+        # Download translations with pushing to branch
+        push_translations: true
+        # To download translations to the specified version branch
+        localization_branch_name: 'l10n_crowdin_translations'
+        # Create pull request after pushing to branch
+        create_pull_request: true
+        # Configuration file to use
+        config: 'crowdin.yml'
+        # Use true for dryrun to test the run without actually processing anything
+        dryrun_action: true
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}