Move all airmap related stuff to its own directory

* 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
  ...

Write only metadata

Move  MAV_PARAM_TYPE to  MAV_PARAM_EXT_TYPE as we're now using the proper MAVLink version.

* AirMapWithAirmapd: (33 commits)
  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
  AirMap traffic: remove inactive vehicles after a timeout of 5 seconds
  AirMapManager: handle dynamic setting changes
  AirmapManager: make sure to pass the SITA reg data to the right objects
  Make AirMapController as part of a Vehicle rather than a creatable QML instance. This is ultimately linked to a vehicle and not the view. Eventually a lot of the code currently in AirMapManager will have to come here as well so the data persists with a vehicle. AirMapManager should only handle the global aspects. Added a temporary indicator right below the toolbar. It's only visible if a permission (of any kind) exists. I need to understand better how this works before coming up with a more permanent solution. Restored toolbar to its original state (brand logo and whatnot)
  Added include and lib path for protobuf on maxOS (we need to make this automatic for all builds) Added AirMap settings (SettingsGroup) Added AirMap settings block to General Settings Create macros to deal with the tedious repetitions within SettingsGroup Removed old, hacked in setting for AirMapKey Remove a few of the tons of build warnings
  PlanManager: upload flight to AirMap when uploading to the vehicle
  AirMapController: add flightPermitStatusChanged
  ...

# Conflicts:
#	src/QGCApplication.cc
#	src/Vehicle/Vehicle.cc
#	src/Vehicle/Vehicle.h

* AirmapUI:
  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

# Conflicts:
#	src/Settings/AppSettings.cc
#	src/Settings/AppSettings.h

Add gstreamer debug log option, and dot file output

Localization update

Fix NMEA settings layout

Insert ROI command which is supported by firmware

Eliminated flight widget "states"
Define flight widget top margin (plugin options)

Adjust colors
Remove unused image

Structure Scan: Structure height support

Hide popup icon until mouseover

Compute plan view items visibility on the fly.

Handle settings when armed

Remove disabled yawVehicleToStructure option