Create install doc for archlinux btw

I have gone through the manual install process BTW.

docs/os-installation/archlinux.md

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+# Bloody Docs for installing Arch Linux
+
+## Afer booting into the hell
+
+If you're inside an Virtualbox eenvironment, make sure SSH is enabled and setup port forwarding stuff. Don't forget changing the root password for live
+environment with something like `linussextips69` (DON'T USE THAT ON OTHER APPS!)
+
+* Create partitons then format with ext4. If desired to seperate /home from the rest of the Arch install, create seperate partitions and mount it as `/mnt/home`.
+* Afer mounting the target partition and other stuff, run `pacstrap /mnt base linux linux-firmware nano git zsh grub` to bootstrap the Arch Linux base.
+* Generate fstabs with `genfstab -U /mnt >> /mnt/etc/fstab`
+
+Now, chroot into target partition with `arch-chroot /mnt`.
+
+## Inside the chroot environment
+
+### VirtualBox-specific setup
+
+Install `virtualbox-guest-utils`
+
+### GRUB Bootloader
+
+If you ever do multibooting, please see <https://wiki.archlinux.org/title/GRUB#Detecting_other_operating_systems> for more detailed docs.
+
+* BIOS/CSR mode:
+
+```sh
+# Change sda into device name for your target hard drive/SSD
+grub-install --target=i386-pc /dev/sda; grub-mkconfig -o /boot/grub/grub.cfg
+```
+
+* UEFI/EFI, Secure Boot disabled:
+
+```sh
+# Change sda into device name for your target hard drive/SSD
+grub-install --target=i386-pc /dev/sda; grub-mkconfig -o /boot/grub/grub.cfg
+```
+
+* With Secure Boot:
+
+## Final Steps
+
+* Exit the chroot and reboot. Don't forget to remove the installation media before the reboot.