Build fails on ROS 2 due to missing tf2_sensor_msgs dependency

[hermanumrao]

When building ndt_localization on ROS 2 (tested on Humble), compilation fails with:

fatal error: tf2_sensor_msgs/tf2_sensor_msgs.h: No such file or directory

The header is included in ndt_localization.h, but tf2_sensor_msgs is not properly declared as a dependency in CMakeLists.txt and package.xml.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b7f0276..51d2e11 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,6 +12,7 @@ endif()
 
 find_package(ament_cmake_auto REQUIRED)
 find_package(Eigen3 REQUIRED)
+find_package(tf2_sensor_msgs REQUIRED)
 find_package(PCL REQUIRED)
 ament_auto_find_build_dependencies()
 
diff --git a/package.xml b/package.xml
index 3b77218..59aa5aa 100644
--- a/package.xml
+++ b/package.xml
@@ -18,6 +18,7 @@
   <depend>tf2</depend>
   <depend>tf2_eigen</depend>
   <depend>ndt_omp</depend>
+  <depend>tf2_sensor_msgs</depend>
 
   <export>
     <build_type>ament_cmake</build_type>

resolves the issue.

I can submit a PR if this change is acceptable.