python312Packages.hdmedians: modernize, fix testing, adopt

[TomaSajt]

Description of changes

This PR refactors the hdmedians python package to use the more modern python packaging methods.

The testing logic was not workign previously, this PR addresses that also.
Note: pynose is used in place of nose, since pynose has python >=3.12 support.

Also, the license of the project changed in 2007, but hasn't been updated to reflect that inside nixpkgs. This was corrected in this PR.

I added myself to the maintainer list, since I maintain another package depending on this package.

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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[natsukium]

pynose violates the license and will be removed in #325669
If you need nose for testing, please disable tests in 3.12.