Feat: Added nouveau driver option for leagacy NVIDIA GPUs.

[w1l238]

Installs mesa & xf86-video-nouveau for older NVIDIA GPUs, defaults back to nvidia-lts for modern NVIDIA GPUs.

Type of Change

• New feature
• Bug fix
• Documentation update
• Refactoring
• Hotfix
• Security patch
• UI/UX improvement

Description

This pull request addresses an issue from #1129 where the Arch Server setup fails on systems with older NVIDIA GPUs (e.g., Optimus configs like GT 220M). The original script installed the 'nvidia-lts' package, which is incompatible with legacy hardware, causing the system to hang indefinitely (according to #1129).

To resolve this, I added a user prompt within the graphics drivers installation section in '~/core/tabs/system-setup/arch/server-setup.sh' that prompts the user to select the type of NVIDA GPU drivers to install.

• When a NVIDIA GPU is detected, the script now asks the user if they are using an older model that may require 'nouveau' drivers.
• If the user answers 'yes' (y/Y), the script installs 'mesa' and 'xf86-video-nouveau'.
• If the user answers 'no' (the default), the script proceeds with the original behavior of installing 'nvidia-lts' for modern GPUs.

This change now enables people with older GPUs to install arch onto their machines via the 'Arch Server Setup'.

Testing

To validate the changes, I performed the following tests in a virtual machine environment:

• Non-NVIDIA System: I ran the modified server-setup.sh script in a fresh Arch Linux VM without GPU passthrough. The script completed successfully, and the new NVIDIA-specific logic was correctly skipped as expected.
• Modern NVIDIA Path (Simulated): While I do not have a physical legacy NVIDIA GPU for end-to-end testing of the nouveau path, the logic for the default path (installing nvidia-lts) remains the same and was verified to not be broken by the changes.

The core change is the addition of a conditional check, which has been reviewed for correctness.

Impact

• Behavioral Change: The installation process now is interactive with this change.
• Dependencies: No new hard dependencies are added. 'xf86-video-nouveau' is only installed if the user explicitly opts in.
• Compatibility: This improves compatibility for a wider range of NVIDIA GPUs.

Issues / other PRs related

• Resolves #1129

Additional Information

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation (cargo xtask docgen).
• My changes generate no errors/warnings/merge conflicts.

[ChrisTitusTech]

bashisms and shellcheck errors need to be cleaned up