Add localization and boot setup tasks

[TimL20]

• Add extra task file for derived variables and checks
• Add localization tasks (locales, timezone, ...)
• Add networking tasks (hostname, /etc/hosts, NetworkManager)
• Add boot setup tasks
  • Edit mkinitcpio hooks
  • Add systemd-boot as an (the only) options as a bootloader

[frankenstein91]

fatal: [archiso]: FAILED! => {"changed": true, "cmd": ["pacstrap", "/mnt", "base", "base-devel", "wget", "git", "efibootmgr", "efitools", "linux", "linux-firmwaresudo", "openssh", "networkmanager", "python", "dosfstools", "btrfs-progs"], "delta": "0:00:14.570256", "end": "2021-04-10 17:07:49.466316", "msg": "non-zero return code", "rc": 1, "start": "2021-04-10 17:07:34.896060", "stderr": "error: target not found: linux-firmwaresudo\n==> ERROR: Failed to install packages to new root", "stderr_lines": ["error: target not found: linux-firmwaresudo", "==> ERROR: Failed to install packages to new root"], "stdout": "==> Creating install root at /mnt\n==> Installing packages to /mnt\n:: Synchronizing package databases...\ndownloading core.db...\ndownloading extra.db...\ndownloading community.db...\n:: There are 24 members in group base-devel:\n:: Repository core\n 1) autoconf 2) automake 3) binutils 4) bison 5) fakeroot 6) file 7) findutils 8) flex 9) gawk 10) gcc 11) gettext 12) grep 13) groff 14) gzip 15) libtool 16) m4 17) make 18) pacman 19) patch 20) pkgconf 21) sed 22) sudo 23) texinfo 24) which\n\nEnter a selection (default=all): ", "stdout_lines": ["==> Creating install root at /mnt", "==> Installing packages to /mnt", ":: Synchronizing package databases...", "downloading core.db...", "downloading extra.db...", "downloading community.db...", ":: There are 24 members in group base-devel:", ":: Repository core", " 1) autoconf 2) automake 3) binutils 4) bison 5) fakeroot 6) file 7) findutils 8) flex 9) gawk 10) gcc 11) gettext 12) grep 13) groff 14) gzip 15) libtool 16) m4 17) make 18) pacman 19) patch 20) pkgconf 21) sed 22) sudo 23) texinfo 24) which", "", "Enter a selection (default=all): "]}