Add native Linux support for 0.2.5 (settings window, patches panel, build guide)

This replaces ondrejeder#18, rebuilt on top of 0.2.5 (the old branch conflicted with the new launcher).

Removed the requirement for the game to be version CUSA00093.

guest_stats.cpp, vk_call_stats.cpp: <x86intrin.h> when not building with MSVC.

launch_check.cpp: no spurious "tested with 1.28" warning when the base game already is 1.28 and there is no update folder.

launcher.cpp:

    For non-Windows builds, a settings window (SDL3 + Dear ImGui) mirroring the Windows one (four frame rate modes incl. frame generation, save folder, per-region firmware details), sized to fit a Steam Deck screen, plus a patches panel (list, enable/disable, save) like shadPS4's Patches tab.

    The launcher indicates where to place patch files.

    My recommendation to enable 720p patches on the Steam Deck or low-end devices.



Patches included: I am sharing patches downloaded from ShadPs4 (I did not create these; all credits go to the community members who made them) along with some patches that I created with the help of Claude a while ago. Please note that these have not been fully tested, and I am making them available in the hope that they might help anyone who needs them.


*For the patches to appear in the launcher, you need to download the files.json file and place it alongside the patches.*
**The patches are designed to run on CUSA00093. Issues may occur with other versions.**

linux-v0.2.2 For SteamOS

*New resolution of launcher

linux-v0.2.1 For SteamOS

• Built on Ubuntu 22.04: needs glibc 2.35 or newer (runs on SteamOS 3.5+ in theory, see below), a CPU with AVX2 (x86-64-v3) and a Vulkan driver installed on the system.
• Not yet tested on a real Steam Deck. Reports welcome.

linux-v0.2.1

Unofficial community Linux build of Driveclub-PC v0.2.1 (original project: ondrejeder/Driveclub-pc-wrapper).
Source code: this repository, branch linux-support. Licensed GPL-2.0-or-later.

• Requires your own Driveclub CUSA00093 v1.28 files and your own PS4 firmware modules. Neither is included, and they must not be shared.
• Requires a CPU with AVX2 (x86-64-v3), a Vulkan GPU driver (Mesa/NVIDIA) installed on the system, and a glibc as recent as Fedora's.
• Tested only on Bazzite with an AMD RX 6750 XT under Wayland. NVIDIA is untested.
• Experimental, provided as is, without support guarantees. Build instructions: BUILDING-LINUX.md.