core: rename mbgl directories to mln (#4511)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

benchmark/util/color.benchmark.cpp

@@ -2,7 +2,7 @@
 
 #include <string>
 #include <vector>
-#include <mbgl/util/color.hpp>
+#include <mln/util/color.hpp>
 
 static const std::vector<std::string> testStrings = {"#000000",
                                                      "#FFFFFF",

benchmark/util/tilecover.benchmark.cpp

@@ -1,9 +1,9 @@
 #include <benchmark/benchmark.h>
-#include <mbgl/util/geo.hpp>
-#include <mbgl/util/geometry.hpp>
-#include <mbgl/util/tile_coordinate.hpp>
-#include <mbgl/util/tile_cover.hpp>
-#include <mbgl/map/transform.hpp>
+#include <mln/util/geo.hpp>
+#include <mln/util/geometry.hpp>
+#include <mln/util/tile_coordinate.hpp>
+#include <mln/util/tile_cover.hpp>
+#include <mln/map/transform.hpp>
 
 using namespace mln;