add API document github page (#1114)

* Doc (#66)

* add doc

* ln -s md

* add pipeline

* Update docfx.yaml

* Update docfx.yaml

* Update docfx.yaml

* Update docfx.yaml

* Update toc.yml

.github/workflows/docfx.yaml

@@ -0,0 +1,57 @@
+name: Docfx
+
+on:
+  push:
+    branches: [ master ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow one concurrent deployment
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+  
+jobs:
+  docfx:
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}    
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Setup dotnet
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: |
+          3.1.x
+          5.0.x
+          6.0.x
+
+    - name: Build
+      run: dotnet build
+
+    - uses: nikeee/docfx-action@v1.0.0
+      name: Build Documentation
+      with:
+        args: doc/docfx.json
+
+    - name: Setup Pages
+      uses: actions/configure-pages@v2
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v1
+      with:
+        # Upload entire repository
+        path: doc/_site
+    - name: Deploy to GitHub Pages
+      id: deployment
+      uses: actions/deploy-pages@v1