Apriltag-detector-umich windows fix (#8)

See RoboStack/ros-jazzy#77

Author: gftabor

apriltag_detector_umich/CMakeLists.txt

@@ -20,6 +20,7 @@ if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   add_compile_options(-Wall -Wextra -Wpedantic -Werror)
 endif()
 set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+add_definitions(-DNOMINMAX)
 
 # find dependencies
 find_package(ament_cmake REQUIRED)