:erlang.process_info(pid, :registered_name) crashes/not implemented.

[petermm]

While implementing GenServer.ex tests are done for:

    {:ok, pid} = GenServer.start_link(Stack, [:hello], name: nil)
    assert Process.info(pid, :registered_name) == {:registered_name, []}

It's already in exavmlib code base here

AtomVM/libs/exavmlib/lib/Process.ex

Line 347 in 22c0da4

def info(pid, :registered_name) do

but obviously a crashy code path.

named/registered processes are already implemented, so would be great with
:erlang.process_info(pid, :registered_name)
support