[Under Testing] Fix GPIO for Modern Linux & Add ARM Cross-Build

[Amanmahe]

STATUS: UNDER TESTING

This PR addresses GPIO compatibility for modern Linux kernels and introduces cross-platform ARM builds. Currently being tested for stability across different platforms.

Fixed:

• GPIO module broken on newer Linux (≥5.10) - kernel security changes
• Replaced deprecated /sys/class/gpio/ with libgpiod (gpioinfo)
• Fixed "No GPIO pins found" error on current Ubuntu/Debian

Added:

• Multi-arch builds: ARM64 + ARMHF packages
• Docker-based CI: Architecture-specific optimizations
• Better GPIO management: Dynamic export, error handling

@lorforlinux,@SAtacker, Please review and merge it.