Merge commit 'ebb5b8ce' into Airmap

* commit 'ebb5b8ce': (40 commits)
  Including airmapd into the repo (macOS only)
  Restore expanded state when enabling AirMap
  AirMap Settings
  Control on Fly View Eliminated flight widget "states" Define flight widget top margin (plugin options)
  Add expand icon
  Expand/Colapse Controllers Adjust colors Remove unused image
  Initial Mockup
  qgroundcontrol.pro: update build to latest airmapd master
  AirMapManager: update authorizations to changed airmapd interface
  rebase fixup: remove AirMapController.{cc,h}
  remove submodule commits qmqtt and tiny-AES128-C
  AirMapManager: error handling, change to updated API of airmapd
  AirMapManager: update polygons to changed airmapd interface
  AirMapManager: update flight search according to updated airmapd
  AirMap: remove SITA registration numbers
  AirspaceManagement & AirMapManager: add weather request API
  AirMapManager: add LifetimeChecker class to prevent callbacks from accessing invalid memory
  AirMapManager: handle multi_polygon
  AirMapManager: change backend to use airmapd
  AirMap: refactor for multi-vehicle support & base class API
  ...