itk: Adds RTK remote crate

[purepani]

Things done

ITK has a bunch of remote modules that can be used. This one enables RTK, which includes ct reconstruction. I haven't attempted adding more of them yet because this is the only one I need at the moment, but if I have time, they could be added. It might be better to get this merged first though.

As far as I can tell, building this module separately from itk is possible, but installing it is not supported: 3
https://github.com/RTKConsortium/RTK/blob/master/INSTALLATION.md

I have built it but haven't tested it yet(I am about to do so though).

Pinging @bcdarwin as a maintainer of this package.

• 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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[purepani]

My bad i forgot to rebase
Edit: It's fixed now

[bcdarwin]

Definitely a useful module to enable.

Some formatting nits:

• please consider renaming to rtkSrc to match the other fixed-output derivations in this expression
• please move to above swigUnstable next to the other fixed-output derivations and add an extra linebreak (unfortunately nixfmt doesn't deal with this)

[purepani]

Should be good now @bcdarwin!

[bcdarwin]

LGTM, thanks.

[purepani]

Hey @bcdarwin what else needs to be done to merge this? (I'm fine with waiting, but it's been a while since I contributed so I don't know if I need to get someone else or if it's in a pipeline somewhere to get merged)

[bcdarwin]

Hey @bcdarwin what else needs to be done to merge this? (I'm fine with waiting, but it's been a while since I contributed so I don't know if I need to get someone else or if it's in a pipeline somewhere to get merged)

Nothing, someone with the commit bit just needs to see and merge it.

(But also see https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md#practical-contributing-advice.)