Fix CORS blocking errors for CDN resources (v1.2.1-beta)

Fixed ERR_BLOCKED_BY_RESPONSE.NotSameOrigin errors by implementing proper CORS headers for public resources:
- Added Access-Control-Allow-Origin: * for public assets
- Changed Cross-Origin-Resource-Policy to cross-origin for CDN files
- Maintained strict security for sensitive routes
- Added cache control for optimal CDN performance

Affected files:
- /public/* (images, CSS, JS, fonts)
- /cdn-files/* (uploaded files)
- /attachments (file serving)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@cdn-app/insider-myaxrin-labs-dinawo",
-  "version": "1.2.0-beta",
+  "version": "1.2.1-beta",
   "description": "",
   "main": "server.js",
   "scripts": {