refactor: migrate key packages from tsup to rollup for build consistency

Migrate icon packages and main platform packages to rollup while maintaining
tsup for simpler core packages:

Packages migrated to rollup:
- packages/core/icons - Core SVG icon definitions
- packages/html/html-icons - HTML-specific icon components
- packages/html/html - Main HTML package
- packages/react/react-icons - React icon components

Packages remaining on tsup:
- Core packages (media, media-store, playback-engine) - Simple TypeScript builds
- Helper packages (*-media-elements, *-media-store) - Working fine with tsup
- React Native packages - Per exclusion request

Benefits:
- Consistent build tooling across icon and platform packages
- Better asset handling capability for future SVG/CSS requirements
- Maintained simplicity for packages that don't need advanced features
- All packages build successfully with proper CommonJS/ESM outputs

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

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

packages/html/html/package.json

@@ -16,7 +16,7 @@
     "dist"
   ],
   "scripts": {
-    "build": "tsup",
+    "build": "rollup -c && tsc --project tsconfig.build.json",
     "test": "echo \"No tests yet\"",
     "clean": "rm -rf dist"
   },
@@ -34,6 +34,11 @@
     "@vjs-10/html-media-store": "*"
   },
   "devDependencies": {
+    "rollup": "^4.0.0",
+    "@rollup/plugin-typescript": "^11.0.0",
+    "@rollup/plugin-node-resolve": "^15.0.0",
+    "@rollup/plugin-commonjs": "^25.0.0",
+    "tslib": "^2.6.0",
     "typescript": "^5.3.0"
   },
   "publishConfig": {