Update microcode handling

[fortifiedhill]

PR Description:

As of mkinitcpio v38, microcode is handled by a hook and inserted into the initrd by default. Therefore, we don't have to add microcode entries to bootloaders anymore. Additionally, the microcode option in .preset files has been deprecated in favor of the new microcode hook.

See: https://archlinux.org/news/mkinitcpio-hook-migration-and-early-microcode/

Tests and Checks

• I have tested the code!
  

[Torxed]

This is awesome to see, minimizing code - simpler life :D

[Torxed]

We might need to do something about this too:

archinstall/archinstall/lib/installer.py

Lines 646 to 650 in c549b50

	if ucode := self._get_microcode():
	(self.target / 'boot' / ucode).unlink(missing_ok=True)
	self.base_packages.append(ucode.stem)
	else:
	debug('Archinstall will not install any ucode.')

[fortifiedhill]

We might need to do something about this too:

archinstall/archinstall/lib/installer.py

Lines 646 to 650 in c549b50

	if ucode := self._get_microcode():
	(self.target / 'boot' / ucode).unlink(missing_ok=True)
	self.base_packages.append(ucode.stem)
	else:
	debug('Archinstall will not install any ucode.')

This code appears to handle adding the respective microcode package to the package install list, depending on the user's CPU. In a VM (after removing this line), I've tested this by removing the linked code, and sure enough, the microcode does not install, so it appears that we need that code.

[Torxed]

Ah you are correct! I should have known this you'd think heh. Cheers for pointing that out!