docs: create a documentation and API reference site

.github/workflows/doc-site.yml

@@ -0,0 +1,47 @@
+name: Generate Documentation and API Reference
+
+# Trigger the action on push to main
+on:
+  push:
+    branches:
+      - main
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  publish-docs:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Dotnet Setup
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: 8.x
+
+    - run: dotnet tool update -g docfx --version 2.74.0
+    - run: docfx docs/docfx.json
+
+    - name: Setup Pages
+      uses: actions/configure-pages@v3
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v2
+      with:
+        # Upload entire repository
+        path: 'docs/_site'
+    - name: Deploy to GitHub Pages
+      id: deployment
+      uses: actions/deploy-pages@v2

.gitignore

@@ -477,4 +477,8 @@ $RECYCLE.BIN/
 *.lnk
 
 # JetBrains Rider cache/options directory
-.idea/
+.idea/
+
+# DocFx
+docs/_site/
+docs/api/

docs/docfx.json

@@ -0,0 +1,52 @@
+{
+  "metadata": [
+    {
+      "src": [
+        {
+          "src": "../src",
+          "files": [
+            "**/*.csproj"
+          ]
+        }
+      ],
+      "dest": "api",
+      "filter": "filter.yml"
+    }
+  ],
+  "build": {
+    "content": [
+      {
+        "files": [
+          "**/*.{md,yml}"
+        ],
+        "exclude": [
+          "_site/**",
+          "filter.yml"
+        ]
+      }
+    ],
+    "resource": [
+      {
+        "files": [
+          "docs/assets/images/**"
+        ]
+      }
+    ],
+    "output": "_site",
+    "template": [
+      "default",
+      "modern",
+      "template"
+    ],
+    "globalMetadata": {
+      "_appName": "",
+      "_appTitle": "AWS Message Processing Framework for .NET",
+      "_appLogoPath": "docs/assets/images/aws-logo.svg",
+      "_appFaviconPath": "docs/assets/images/favicon.ico",
+      "_enableSearch": true,
+      "pdf": false,
+      "_disableContribution": true,
+      "_appFooter": "<div class='text-center'>© 2023, Amazon Web Services, Inc. or its affiliates. All rights reserved.</div>"
+    }
+  }
+}