GitHub Action to build & upload the rust documentation

.github/workflows/upload-docs.yml

@@ -0,0 +1,28 @@
+name: Build & Deploy Documentation on rs.delta.chat
+
+on:
+  push:
+    branches:
+      - master
+      - docs-gh-action
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Build the site in the jekyll/builder container
+      run: |
+        cargo doc
+    - name: Upload
+      uses: horochx/deploy-via-scp@v1.0.1
+      with:
+        user: ${{ secrets.USERNAME }}
+        key: ${{ secrets.KEY }}
+        host: "delta.chat"
+        port: 22
+        local: "target/doc/"
+        remote: "/var/www/html/rs/"
+