Added local position estimator.

CMakeLists.txt

Makefile

ROMFS/px4fmu_common/init.d/rc.mc_apps

Tools/check_code_style.sh

Tools/posix.gdbinit

Tools/sitl_run.sh

cmake/configs/nuttx_px4fmu-v2_lpe.cmake

cmake/configs/posix_sitl_lpe.cmake

cmake/configs/posix_sitl_simple.cmake

posix-configs/SITL/init/rcS_lpe

src/firmware/nuttx/CMakeLists.txt

src/firmware/posix/CMakeLists.txt

src/modules/controllib/blocks.cpp

.../local_position_estimator/BlockLocalPositionEstimator.cpp

.../local_position_estimator/BlockLocalPositionEstimator.hpp

src/modules/local_position_estimator/CMakeLists.txt

...ocal_position_estimator/local_position_estimator_main.cpp

src/modules/local_position_estimator/matrix/.gitignore

src/modules/local_position_estimator/matrix/CMakeLists.txt

src/modules/local_position_estimator/matrix/src/Matrix.hpp