Support for Ubuntu 24.04

[AdeshAtole]

(venv) ➜  apt-select git:(master) ✗ apt-select
WARNING: no country code provided. defaulting to US.
Getting list of mirrors...done.
Testing latency to mirror(s)
[91/91] 100%
Getting list of launchpad URLs...done.
Looking up 1 status(es)
Traceback (most recent call last):
  File "/home/adeshssd/.local/bin/apt-select", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/local/lib/python3.12/dist-packages/apt_select-2.2.1-py3.12.egg/apt_select/__main__.py", line 245, in main
  File "/usr/local/lib/python3.12/dist-packages/apt_select-2.2.1-py3.12.egg/apt_select/__main__.py", line 175, in apt_select
  File "/usr/local/lib/python3.12/dist-packages/apt_select-2.2.1-py3.12.egg/apt_select/apt.py", line 161, in set_current_archives
apt_select.apt.SourcesFileError: Error finding current main URI in /etc/apt/sources.list

(venv) ➜  apt-select git:(master) ✗ cat /etc/apt/sources.list
# Ubuntu sources have moved to /etc/apt/sources.list.d/ubuntu.sources

Ubuntu 24.04 has moved to DEB822-STYLE for sources.