Install scripts centered around post-install.sh

which excecutes the following functions:

• replaces linux yay firefox with linux-zen paru librewolf
• upgrades packages
• changes grub settings
• installs extra packages
• if btrfs: takes a snapshot, installs grub-btrfs
• updates grub

Also runs the following other scripts:

• graphics-drivers.sh - graphics driver installation
• zram-generator.sh - sets up zram-generator for 2x RAM and initializes it
• mangohud.sh - mangohud config and global enable
• misc.sh - nano syntax highlighting, sysrq

Other scripts included in repo:

• cloudflared.sh - install cloudflared for dns over https
• libvirt.sh - primarily image subvolume setup
• waydroid.sh - waydroid initialization w/ ARM translation
• maliit-dark.sh - sets maliit up to run with dark mode env variables