[common] Switch to boost::unordered_flat containers (#4326)

Replaces all instances of ankerl's unordered map/set with boost's
`unordered_flat_*` classes. This uses std::hash since boost::hash is
actually a lot slower.

Also adds an abstraction layer in `Common` so future changes are quicker
and easier.

Other implementation details:
- ankerl provided hash specializations for tuple and pair, so those were
  ported here
- std::erase_if doesn't work on boost, so just used the ADL'd erase_if

This should be about equal or superior performance as unordered_dense for everything except iteration.

Signed-off-by: crueter <crueter@eden-emu.dev>

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4326
Reviewed-by: Lizzie and Samuel <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

3 files changed, 6 insertions, 6 deletions

diff --git a/src/video_core/renderer_opengl/gl_buffer_cache.h b/src/video_core/renderer_opengl/gl_buffer_cache.h
index a0acfc48c1..09fa3a59af 100644
--- a/src/video_core/renderer_opengl/gl_buffer_cache.h
+++ b/src/video_core/renderer_opengl/gl_buffer_cache.h
@@ -8,7 +8,7 @@
 
 #include <array>
 #include <span>
-#include <ankerl/unordered_dense.h>
+#include "common/container/unordered_map.h"
 
 #include "common/common_types.h"
 #include "video_core/buffer_cache/buffer_cache_base.h"
@@ -242,7 +242,7 @@ private:
     u32 index_buffer_offset = 0;
 
     u64 device_access_memory;
-    ankerl::unordered_dense::map<GPUVAddr, OGLTransformFeedback> tfb_objects;
+    ::Common::unordered_map<GPUVAddr, OGLTransformFeedback> tfb_objects;
 };
 
 struct BufferCacheParams {
diff --git a/src/video_core/renderer_opengl/gl_shader_cache.h b/src/video_core/renderer_opengl/gl_shader_cache.h
index 02e54539fc..794b6773cb 100644
--- a/src/video_core/renderer_opengl/gl_shader_cache.h
+++ b/src/video_core/renderer_opengl/gl_shader_cache.h
@@ -7,7 +7,7 @@
 #pragma once
 
 #include <filesystem>
-#include <ankerl/unordered_dense.h>
+#include "common/container/unordered_map.h"
 
 #include "common/common_types.h"
 #include "common/thread_worker.h"
@@ -81,8 +81,8 @@ private:
     GraphicsPipeline* current_pipeline{};
 
     ShaderContext::ShaderPools main_pools;
-    ankerl::unordered_dense::map<GraphicsPipelineKey, std::unique_ptr<GraphicsPipeline>> graphics_cache;
-    ankerl::unordered_dense::map<ComputePipelineKey, std::unique_ptr<ComputePipeline>> compute_cache;
+    ::Common::unordered_map<GraphicsPipelineKey, std::unique_ptr<GraphicsPipeline>> graphics_cache;
+    ::Common::unordered_map<ComputePipelineKey, std::unique_ptr<ComputePipeline>> compute_cache;
 
     Shader::Profile profile;
     Shader::HostTranslateInfo host_info;
diff --git a/src/video_core/renderer_opengl/gl_texture_cache.h b/src/video_core/renderer_opengl/gl_texture_cache.h
index 8aed499bb7..8a830fa0c9 100644
--- a/src/video_core/renderer_opengl/gl_texture_cache.h
+++ b/src/video_core/renderer_opengl/gl_texture_cache.h
@@ -159,7 +159,7 @@ private:
     UtilShaders util_shaders;
     FormatConversionPass format_conversion_pass;
 
-    std::array<ankerl::unordered_dense::map<GLenum, FormatProperties>, 3> format_properties;
+    std::array<::Common::unordered_map<GLenum, FormatProperties>, 3> format_properties;
     bool has_broken_texture_view_formats = false;
 
     OGLTexture null_image_1d_array;