CODEOWNERS: Add daor-oti and wopu-ot to several directories

daor-oti and wopu-ot also want to be added automatically as
reviewers to POSIX arch, native_posix, nrf52_bsim and bsim
related test apps.
(see CODEOWNERS for more info about which each is interested on)

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