Add GitHub Pages deployment with GitHub Actions

- Add GitHub Actions workflow to build and deploy on push to main
- Configure webpack for production builds with correct base path
- Add CopyWebpackPlugin to copy APKINDEX file to dist
- Update data fetcher to handle GitHub Pages base path
- Clean dist directory on build for fresh deployments

The site will be automatically deployed to https://imjasonh.github.io/apkviz/
whenever changes are pushed to the main branch.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -0,0 +1,53 @@
+name: Build and Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          
+      - name: Install dependencies
+        run: npm ci
+        
+      - name: Build project
+        run: npm run build
+        
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+        
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: './dist'
+          
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4