Add support for Python 3.12

[Fatal1ty]

[Fatal1ty]

Support for 3.11 was introduced by @kupsum in #57. PR for 3.12 is still very welcome.

[ascrookes]

@Fatal1ty what's the level of effort to get this working for python 3.12? I want to use it for a project but I need 3.12 support. If it isn't a huge lift maybe I'll take a swing at it.