Use ament_export_targets for all targets (ros-navigation#4112)

* Matches new internal ALIAS targets
* Use ALIAS targets for all internal linkage
* Remove unnecessary calls to ament_target_dependencies in test code
* Export includes in proper folders for overlays in colcon

Signed-off-by: Ryan Friedman <ryanfriedman5410+github@gmail.com>

nav2_costmap_2d/test/integration/CMakeLists.txt

@@ -58,12 +58,9 @@ target_link_libraries(test_costmap_publisher_exec
 ament_add_gtest_executable(test_costmap_subscriber_exec
 test_costmap_subscriber.cpp
 )
-ament_target_dependencies(test_costmap_subscriber_exec
-    ${dependencies}
-)
 target_link_libraries(test_costmap_subscriber_exec
-    nav2_costmap_2d_core
-    nav2_costmap_2d_client
+    ${PROJECT_NAME}::nav2_costmap_2d_core
+    ${PROJECT_NAME}::nav2_costmap_2d_client
 )
 
 ament_add_test(test_collision_checker