* Add a "HANDLE_TYPE_IS_PTR" compile flag that
redefines handle_t as ptr (instead of int32).

* Create a local copy of storage/ipc.c in trusty_mod directory to allow handle_t to be treated as an opaque object.

* Create a local include dir with trusty_ipc.h for the actual handle_t is ptr redef.

* Run port_create_destroy_harness and msg_buffer_harness with redefined handle_t on
local ipc.c

* Add handle is ptr jobs to CI

Known issues/Needs investigation:

The following issues need to be fixed but not blocking the PR since the infrastructure changes are quite big itself.

* msg_buffer_harness.c fails in vac mode with handle_t as ptr. It seems to be failing at head (added to CI blacklist) so this PR doesn't make the situation worse.