[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>

1 files changed, 7 insertions, 7 deletions

diff --git a/src/input_common/input_engine.h b/src/input_common/input_engine.h
index 7ad40027e4..3613219f56 100644
--- a/src/input_common/input_engine.h
+++ b/src/input_common/input_engine.h
@@ -8,7 +8,7 @@
 
 #include <functional>
 #include <mutex>
-#include <ankerl/unordered_dense.h>
+#include "common/container/unordered_map.h"
 
 #include "common/common_types.h"
 #include "common/input.h"
@@ -270,10 +270,10 @@ protected:
 
 private:
     struct ControllerData {
-        ankerl::unordered_dense::map<int, bool> buttons;
-        ankerl::unordered_dense::map<int, u8> hat_buttons;
-        ankerl::unordered_dense::map<int, float> axes;
-        ankerl::unordered_dense::map<int, BasicMotion> motions;
+        ::Common::unordered_map<int, bool> buttons;
+        ::Common::unordered_map<int, u8> hat_buttons;
+        ::Common::unordered_map<int, float> axes;
+        ::Common::unordered_map<int, BasicMotion> motions;
         Common::Input::BatteryLevel battery{};
         Common::Input::BodyColorStatus color{};
         Common::Input::CameraStatus camera{};
@@ -301,8 +301,8 @@ private:
     bool configuring{false};
     const std::string input_engine;
     int last_callback_key = 0;
-    ankerl::unordered_dense::map<PadIdentifier, ControllerData> controller_list;
-    ankerl::unordered_dense::map<int, InputIdentifier> callback_list;
+    ::Common::unordered_map<PadIdentifier, ControllerData> controller_list;
+    ::Common::unordered_map<int, InputIdentifier> callback_list;
     MappingCallback mapping_callback;
 };