add launch file

src/beacon_positioning/CMakeLists.txt

@@ -39,6 +39,11 @@ target_include_directories(tracker_position PUBLIC
 install(TARGETS tracker_position
   DESTINATION lib/${PROJECT_NAME})
 
+install(
+  DIRECTORY launch
+  DESTINATION share/${PROJECT_NAME}
+)
+
 if(BUILD_TESTING)
   find_package(ament_lint_auto REQUIRED)
   # the following line skips the linter which checks for copyrights