Clean up Makefile, move stuff into separate scripts

scripts/mkiso.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+rm -rf iso_root
+mkdir -p iso_root/boot
+cp -v kernel/mop2 iso_root/boot
+cp -v base.img iso_root
+mkdir -p iso_root/boot/limine
+cp -v limine.conf limine/limine-bios.sys limine/limine-bios-cd.bin \
+		limine/limine-uefi-cd.bin iso_root/boot/limine
+mkdir -p iso_root/EFI/BOOT
+cp -v limine/BOOTX64.EFI iso_root/EFI/BOOT
+cp -v limine/BOOTIA32.EFI iso_root/EFI/BOOT
+xorriso -as mkisofs -R -r -J -b boot/limine/limine-bios-cd.bin \
+		-no-emul-boot -boot-load-size 4 -boot-info-table -hfsplus \
+		-apm-block-size 2048 --efi-boot boot/limine/limine-uefi-cd.bin \
+		-efi-boot-part --efi-boot-image --protective-msdos-label \
+		iso_root -o mop2.iso
+./limine/limine bios-install mop2.iso
+