core: rename mbgl namespace to mln (#4487)

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

platform/android/MapLibreAndroid/src/cpp/jni_native.cpp

@@ -60,7 +60,7 @@
 #include "text/local_glyph_rasterizer_jni.hpp"
 #include "tile/tile_operation.hpp"
 
-namespace mbgl {
+namespace mln {
 namespace android {
 
 void RegisterNativeHTTPRequest(JNIEnv&);
@@ -176,4 +176,4 @@ void registerNatives(JavaVM* vm) {
 }
 
 } // namespace android
-} // namespace mbgl
+} // namespace mln