Show live extraction progress in package postProcessLabel

Update postProcessLabel during extraction with detailed progress:
- Overall percentage and archive count (e.g. "Entpacken 45% (3/6)")
- Password cracking progress when testing passwords
- Works for both hybrid and full extraction modes

Previously the label was static "Entpacken..." with no detail about
what was happening during potentially long extraction phases.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "real-debrid-downloader",
-  "version": "1.6.40",
+  "version": "1.6.41",
   "description": "Desktop downloader",
   "main": "build/main/main/main.js",
   "author": "Sucukdeluxe",