ADD support for ipv6-console access

[Shirkanesi]

The current implementation does not allow to connect to a dnsdist-console listening only on v6.
This Patch checks whether the given address is a v4 or v6 address and creates the correct socket.

Feel free to add any suggestions for further changes :)

[dmachard]

Thanks for this PR.
All tests are failed but perhaps because the IPv6 protocol is not available in github runner.

Run python -m unittest tests.test_console
.E/opt/hostedtoolcache/Python/3.10.14/x64/lib/python3.10/unittest/case.py:613: ResourceWarning: unclosed <socket.socket fd=3, family=AddressFamily.AF_INET6, type=SocketKind.SOCK_STREAM, proto=0, laddr=('::1', 51026, 0, 0)>
  outcome.errors.clear()
ResourceWarning: Enable tracemalloc to get the object allocation traceback

======================================================================
ERROR: test_show_version (tests.test_console.TestConnectV6)
connect and get version
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/runner/work/python-dnsdist-console/python-dnsdist-console/tests/test_console.py", line 21, in setUp
    self.console = Console(host="::1", port=5199,
  File "/home/runner/work/python-dnsdist-console/python-dnsdist-console/dnsdist_console/console.py", line 26, in __init__
    self.connect_to()
  File "/home/runner/work/python-dnsdist-console/python-dnsdist-console/dnsdist_console/console.py", line 60, in connect_to
    self.sock.connect((self.console_host, self.console_port))
ConnectionRefusedError: [Errno 111] Connection refused

----------------------------------------------------------------------
Ran 2 tests in 0.064s

FAILED (errors=1)
Error: Process completed with ex

[Shirkanesi]

Oh, this seems to be an interesting quirk of dnsdists config... Apparently [::] causes a bind on ipv4 and ipv6 but fails if 0.0.0.0 was specified before.
The new version works for me.