RDMA/core: Move ib_uverbs_file struct to uverbs_types.h

RDMA/core: Move ib_uverbs_file struct to uverbs_types.h

In light of the previous commit, make the ib_uverbs_file accessible to
drivers by moving its definition to uverbs_types.h, to allow drivers to
freely access the struct argument and create a personalized cleanup flow.

For the same reason expose uverbs_try_lock_object function to allow driver
to safely access the uverbs objects.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Link: https://patch.msgid.link/29b718e0dca35daa5f496320a39284fc1f5a1722.1730373303.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>