message: ycm_extra_conf: get includes right
diff: @@ -59,27 +59,12 @@ flags = [
  '-x',
  'c++',
  '-I',
  +'.',
  +'-I',
  'core',
  '-I',
  'backend/src',
  '-I',
  -'plugins/action',
  -'-I',
  -'plugins/camera',
  -'-I',
  -'plugins/follow_me',
  -'-I',
  -'plugins/gimbal',
  -'-I',
  -'/plugins/info',
  -'-I',
  -'/plugins/logging',
  -'-I',
  -'/plugins/mission',
  -'-I',
  -'/plugins/offboard',
  -'-I',
  -'/plugins/telemetry',
  '-isystem',
  'third_party/mavlink/include/mavlink/v2.0',
  '-isystem',
  