[core] Add overridable game setting functionality (#2963)

Adds a place to override specific game settings for specific vendors

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2963
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Co-authored-by: Kleidis <kleidis1@protonmail.com>
Co-committed-by: Kleidis <kleidis1@protonmail.com>

src/core/game_settings.h

@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <string>
+
+namespace VideoCore { class RendererBase; }
+
+namespace Core::GameSettings {
+
+enum class OS {
+    Windows,
+    Linux,
+    MacOS,
+    IOS,
+    Android,
+    FireOS,
+    HarmonyOS,
+    FreeBSD,
+    DragonFlyBSD,
+    NetBSD,
+    OpenBSD,
+    HaikuOS,
+    AIX,
+    Managarm,
+    RedoxOS,
+    Solaris,
+    Unknown,
+};
+
+enum class GPUVendor {
+    Nvidia,
+    AMD,
+    Intel,
+    Apple,
+    Qualcomm,
+    ARM,
+    Imagination,
+    Microsoft,
+    Unknown,
+};
+
+enum class TitleID : std::uint64_t {
+    NinjaGaidenRagebound = 0x0100781020710000ULL
+};
+
+struct EnvironmentInfo {
+    OS os{OS::Unknown};
+    GPUVendor vendor{GPUVendor::Unknown};
+    std::string vendor_string; // raw string from driver
+};
+
+EnvironmentInfo DetectEnvironment(const VideoCore::RendererBase& renderer);
+
+void LoadOverrides(std::uint64_t program_id, const VideoCore::RendererBase& renderer);
+
+} // namespace Core::GameSettings