Add VitePress documentation site setup

Introduces VitePress configuration and theme files for documentation, updates the GitHub Pages workflow to build and deploy the new docs, and updates .gitignore for VitePress and Node artifacts. Adds necessary dependencies and scripts to package.json, and updates the ONVIF client example README title.

.github/workflows/gh-pages.yml

@@ -2,7 +2,9 @@
 name: Deploy static content to Pages
 
 on:
-  # Allows you to run this workflow manually from the Actions tab
+  push:
+    branches:
+      - main
   workflow_dispatch:
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
@@ -14,7 +16,7 @@ permissions:
 # Allow one concurrent deployment
 concurrency:
   group: "pages"
-  cancel-in-progress: true
+  cancel-in-progress: false
 
 jobs:
   # Single deploy job since we're just deploying
@@ -25,13 +27,26 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - name: Setup Node
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24
+          package-manager-cache: false
+      - name: Install dependencies
+        run: npm install --no-package-lock
+      - name: Build docs
+        env:
+          BASE_URL: /${{ github.event.repository.name }}/
+        run: npm run docs:build
       - name: Setup Pages
-        uses: actions/configure-pages@v4
+        uses: actions/configure-pages@v5
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with:
-          path: './website'
+          path: './.vitepress/dist'
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4