message: cmake: add version information to package
  This allows to specify the version when using MAVSDK, e.g.:
  find_package(MAVSDK 0.38.2 REQUIRED)
diff: @@ -53,6 +53,14 @@ configure_file(MAVSDKConfig.cmake.in
  configure_file(MAVSDKConfig.cmake.in
  "${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/MAVSDKConfig.cmake" @ONLY)
  +include(CMakePackageConfigHelpers)
  +# Supply version to config
  +write_basic_package_version_file(
  + ${CMAKE_CURRENT_BINARY_DIR}/MAVSDKConfigVersion.cmake
  + VERSION ${MAVSDK_VERSION_MAJOR}.${MAVSDK_VERSION_MINOR}.${MAVSDK_VERSION_PATCH}
  + COMPATIBILITY SameMajorVersion )
  +
  install(FILES
  "${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/MAVSDKConfig.cmake"
  + "${CMAKE_CURRENT_BINARY_DIR}/MAVSDKConfigVersion.cmake"
  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/MAVSDK)
  