CODEOWNERS: Assing maintainer for all native_posix backends
CODEOWNERS: Assing maintainer for all native_posix backends

Assign aescolar as maintainer for all native_posix subsys
backends/components/modules

Signed-off-by: Alberto Escolar Piedras <52be3174920ed06cbdfbcf9622a1a6c68e942617@oticon.com>

ldts/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,explora26/zephyr,ldts/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,punitvara/zephyr,finikorg/zephyr,Vudentz/zephyr,Vudentz/zephyr,galak/zephyr,ldts/zephyr,finikorg/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,punitvara/zephyr,finikorg/zephyr,explora26/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,explora26/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,explora26/zephyr,Vudentz/zephyr,Vudentz/zephyr,Vudentz/zephyr,ldts/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,explora26/zephyr,finikorg/zephyr,galak/zephyr,nashif/zephyr,punitvara/zephyr,GiulianoFranchetto/zephyr