playonlinux: add python dependency pyasyncore

[L-Trump]

Current playonlinux start failed with:

Looking for python3... 3.12.6 - selected
/nix/store/6hadbrvivhi7p31rz6rjx8dbl5m9r2ch-playonlinux-4.4/share/playonlinux/python/mainwindow.py:708: SyntaxWarning: invalid escape sequence '\|'
  self.SupprotedIconExt = "All|*.xpm;*.XPM;*.png;*.PNG;*.ico;*.ICO;*.jpg;*.JPG;*.jpeg;*.JPEG;*.bmp;*.BMP\
1.0
Traceback (most recent call last):
  File "/nix/store/6hadbrvivhi7p31rz6rjx8dbl5m9r2ch-playonlinux-4.4/share/playonlinux/python/mainwindow.py", line 41, in <module>
    import options, threading, debug
  File "/nix/store/6hadbrvivhi7p31rz6rjx8dbl5m9r2ch-playonlinux-4.4/share/playonlinux/python/options.py", line 21, in <module>
    from asyncore import dispatcher
ModuleNotFoundError: No module named 'asyncore'

Add corresponding dependency could fix the issue.

@pasqui23

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[pasqui23]

LGTM

[nixpkgs-ci]

Successfully created backport PR for release-24.11:

• [Backport release-24.11] playonlinux: add python dependency pyasyncore #390797