fix: ModuleNotFoundError: No module named 'utils'

[milahu]

error was

$ python3 -c "import btdht"
...
  File "/nix/store/vl11kw645rjqd46irlsw2bkch24p9p0i-python3.12-btdht-0.3.3/lib/python3.12/site-packages/btdht/__init__.py", line 13, in <module>
    from btdht.dht import  DHT, DHT_BASE, Node, Bucket, RoutingTable
  File "btdht/dht.pyx", line 1, in init btdht.dht
  File "btdht/krcp.pyx", line 22, in init btdht.krcp
ModuleNotFoundError: No module named 'utils'

[Juan-de-Salgado]

Hi,
the sources in pypi.org (the ones installed by "pip install btdht") do not appear to contain this change, judging from the .pyx files I find under .../site-packages/btdht/.

I get an "AttributeError: module 'utils' has no attribute 'Scheduler'" when instantiating dht = btdht.DHT().
Trying

import btdht
from btdht.utils import Scheduler
dht = btdht.DHT(scheduler=Scheduler())
dht.start()

also produces, after a few seconds, "AttributeError: module 'utils' has no attribute 'id_to_longid'".
My guess is that this commit would fix these issues.

Thanks