- deploy px4 metadata using target
 - clang scan-build upload output to s3
 - clang-tidy properly check headers
 - add cppcheck helper
 - force gcc color

Move RC and DL failsafe actions handling from navigator to commander (credits to @AndreasAntener)
Separate manual kill switch handling via manual_lockdown to prevent override and release of software lockdown by RC switch

Other changes:
Add failsafe tune
Fix LED blinking for Pixracer
Return back support for rc inputs in simulator but now it is configurable via cmake

-closes #5862

https://www.gnu.org/software/global/

The toolchain_* files are target OS specific so they were moved to
the target OS subdir.

The gcc_version.* files are only cleared once per make instantiation so
a build that creates multiple HW targets will try to link with an
incompatible .o file (i.e. x86 build linking ARM .o).  I created
posix-arm as a separate target to fix this problem.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

The generated file is not created in the Build tree and is
automatically ignored

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

The posix build would complain that toipc_listener.cpp did not exist
and there was no rule to create it.

The required rule was added to src/systemcmds/topic_listener/module.mk

The script generate_listener.py is run from the Build tree and needs to
access $(PX4_BASE)/msgs so $(PX4_BASE) is now passed as an argument to
generate_listener.py

Signed-off-by: Mark Charlebois <charlebm@gmail.com>