WIP: Enhance shader compilation performance and control

This commit adds new settings and optimizations for shader compilation:

- Add new settings:
  - use_enhanced_shader_building: Enable enhanced shader compilation
  - shader_compilation_priority: Control shader compilation priority

- Improve shader compilation performance:
  - Optimize worker thread allocation based on CPU cores
  - Add smarter async shader compilation heuristics
  - Prioritize vertex and fragment shader compilation
  - Add performance tracking and logging

- Add performance monitoring:
  - Track shader compilation times
  - Log slow shader compilations
  - Monitor async shader compilation statistics

This is a work in progress commit. Further optimizations and refinements
will be needed based on testing and feedback.

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/common/settings.h

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
@@ -629,11 +630,21 @@ struct Values {
 
     // Add-Ons
     std::map<u64, std::vector<std::string>> disabled_addons;
+
+    // Renderer Advanced Settings
+    SwitchableSetting<bool> use_enhanced_shader_building{linkage, false, "Enhanced Shader Building",
+                                                        Category::RendererAdvanced};
+
+    // Add a new setting for shader compilation priority
+        SwitchableSetting<int> shader_compilation_priority{linkage, 0, "Shader Compilation Priority",
+                                                      Category::RendererAdvanced};
 };
 
 extern Values values;
 
 void UpdateGPUAccuracy();
+// boold isGPULevelNormal();
+// TODO: ZEP
 bool IsGPULevelExtreme();
 bool IsGPULevelHigh();