feat: create autonomous Nivora package repository

Maintain a validated cross-distribution package catalog.
Automate upstream updates, isolated builds, diagnostics, and direct publication.
Build the official GitHub Desktop sources for Linux with working OAuth.

ventoy/ventoy.desktop

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Application
+Name=Ventoy
+Comment=Create and manage multiboot USB drives
+Comment[ru]=Создание и управление мультизагрузочными USB-накопителями
+Exec=ventoy
+Icon=ventoy
+Terminal=false
+Categories=System;Utility;
+Keywords=USB;ISO;boot;multiboot;flash;
+StartupNotify=true