- fixes CID 139488

- fixes CID 199479

 - fixes CID 141890

 - fixes CID 139514

 - fixes CID 199478

This got introduced with 61b0a81b. Due to the removed startup_in_hil flag,
this check does not work anymore, so remove it completely.

The mixer was creating a new class in interrupt context, which is not valid use in NuttX. This change copies the mixer into the buffer and runs the mixer management section of the code outside of interrupt context in the normal task.

 - check format first
 - build on nuttx_px4fmu-v2_default
 - generate all metadata
 - stubs for deploying metadata and binaries

This reverts commit 9fde1925.

This is a non-functional change that point to a commit on master instead of the merged branch.

The function `mission_item_to_position_setpoint()` is called in
`FollowTarget::update_position_sp()`. The nav_cmd is a
NAV_CMD_DO_FOLLOW_REPOSITION as set earlier in `set_follow_target_item`.

Since `mission_item_to_position_setpointi` returns early because the item
presumably contains no position, the lat/lon of the mission_item are
not copied over to the position_setpoint and therefore the vehicle will
never move in follow me position mode.

Fixes issue #8178

 - use make instead of ninja on OSX for now

This reduces memory usage by roughly 100MB on my laptop