[#404] Apply ament_auto Macros to ndt_nodes

Description

• part of #404 (closed)
  • apply ament_auto macros to CMakeLists.txt
  • fix code style for added lint

Notes for Reviewer

It fails with cppcheck as well as !358 (merged) . For some reason I get a syntax error message on cppcheck.

build/ndt_nodes/test_results/ndt_nodes/cppcheck.xunit.xml: 8 tests, 0 errors, 1 failure, 0 skipped
- ndt_nodes.cppcheck error: syntaxError (test/test_map_publisher.cpp:50)
  <<< failure message
    syntax error
  >>>

The syntax error is weird because the build has gone through.

Checklist

• success colcon build
• success colcon test