Description of changes

Following on from my efforts in #166865, I refined my hacky script and I've been able to find an additional 167 packages that provide a single binary whose name differs from the package's name in nixpkgs (or the package's pname) and so don't work with nix run.

The mainProgram additions in 16e15fa should be pretty boring and uncontroversial.

I separated out additions of mainProgram to files located in pkgs/development/libraries/ into a separate commit (9e4be53) since a lot of these required more judgement. I think it makes sense for many of these packages to include a mainProgram as they often provide a single binary utility as part of the package that folks might want to use. However, in some cases it's pretty marginal. For those cases, I looked into the functionality of the binary and what it's used for, and made a judgment call. (I did err on the side of adding mainProgram in a lot of the marginal cases since it does little to no harm, but there were many cases where I left it off since it made no sense.)

Finally I made separate commit for nimble-unwrapped (d8da6a1) since I added a new meta attribute set since it was missing entirely.

I've gone through these changes pretty carefully, but a couple more skims for others is probably in order as a sanity check.

(While I was at it, I also ended up tweaking the order of the meta attributes to my understanding of which order is best practice, as well as updating some of the homepages and adding some when they were missing.)

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• 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/)
• 22.05 Release Notes (or backporting 21.11 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
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.