nodePackages.undollar:init at 1.0.0

[pasqui23]

Motivation for this change

Undollar is a simple utility to ease copy-pasting scripting

Things done

• [ X] Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • [X ] NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nix-review --run "nix-review wip"
• [ X] Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Assured whether relevant documentation is up to date
• Fits CONTRIBUTING.md.

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[prusnak]

Please rework your PR. It now has a merge conflict after PR #89184 has been merged

[ryantm]

merged via #100606