Add workflow for building documentation

Author: Daespen

.github/workflows/docfx-build-publish.yml

@@ -0,0 +1,30 @@
+# This workflow will build and publish documentation with docfx
+# For more information see: https://github.com/actions/setup-java/blob/main/docs/advanced-usage.md#apache-maven-with-a-settings-path
+
+name: Documentation Publish
+
+on:
+  push:
+    branches: 
+      - main
+
+jobs:
+  build_docs:
+    runs-on: ubuntu-latest
+    name: Build and publish documentation
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v1
+
+    - name: Build docfx
+      uses: nikeee/docfx-action@v1.0.0
+      with:
+        args: docs/docfx.json
+
+    - name: Publish
+      if: github.event_name == 'push'
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: docs/_site
+        force_orphan: true