Fixes:

• [buildarmimg] Clean up uboot flashing function a bit.
• [buildarmimg] Use GPT partition table on devices that supports it.
• Add logging to logfiles. Log files are located in /var/log/manjaro-arm-tools/.
• [buildarmimg] Add support for Nemo Mobile nemomobile.
• [buildarmimg] Enable sshd on Plasma Mobile dev builds.
• Update makepkg script to be Pacman 6 compatible.
• [buildarmimg] Enable pacman-init.service to generate main GPG signing keys on first boot.
• [buildarmimg] If -k option is a URL, place the repo at the top of pacman.conf instead of at the bottom.