common: Rename binary_find.h to algorithm.h

Makes the header more general for other potential algorithms in the
future. While we're at it, include a missing <functional> include to
satisfy the use of std::less.

src/video_core/texture_cache/surface_base.cpp

@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include "common/algorithm.h"
 #include "common/assert.h"
 #include "common/common_types.h"
 #include "common/microprofile.h"

src/video_core/texture_cache/surface_base.h

@@ -4,12 +4,11 @@
 
 #pragma once
 
-#include <algorithm>
+#include <optional>
+#include <tuple>
 #include <unordered_map>
 #include <vector>
 
-#include "common/assert.h"
-#include "common/binary_find.h"
 #include "common/common_types.h"
 #include "video_core/gpu.h"
 #include "video_core/morton.h"