Finish apply_dist()

[duckinator]

EDIT (2025-03-13): I was reminded of this PR earlier today, and wanted to leave a quick note for anyone who may try picking up this work in the future.

You can definitely split this up into smaller PRs, I just didn't have the time to do so before my contract ended. You will likely need to mark things with #[allow(dead_code)] for it to be mergeable.

This PR is functional and has unit tests for each part that was split into its own file.

Since I tried to make each file self-contained, you can make PRs doing the following:

1. Add pretty_assertions dep (Cargo.toml, Cargo.lock, cargo-dist/Cargo.toml)
2. Add cargo-dist/src/init/apply_dist/helpers.rs
3. Add cargo-dist/src/init/apply_dist/artifacts.rs
4. Add cargo-dist/src/init/apply_dist/builds.rs
5. Add cargo-dist/src/init/apply_dist/ci.rs
6. Add cargo-dist/src/init/apply_dist/hosts.rs
7. Add cargo-dist/src/init/apply_dist/installers.rs
8. Add cargo-dist/src/init/apply_dist/publishers.rs
9. Add cargo-dist/src/init/apply_dist/mod.rs + remove cargo-dist/src/init/apply_dist.rs
10. Update cargo-dist/src/init/mod.rs.

If you do that, and they all are merged, you can rebase #1763 off main and the diff will be way smaller.

---

original description

NOTE: The errors are due to dist::init::apply_dist::apply() never being called outside of the test suite.

---

This PR is functional and has unit tests for each part that was split into its own file. I knew this PR was going to be distressingly large, so I tried to design it so each part could be treated entirely self-contained.

The exception is cargo-dist/src/init/apply_dist/mod.rs, which pulls everything else in that directory together.

There's also cargo-dist/src/init/mod.rs, but that's tiny.

---

There is definitely room for refactoring in some spots, because I learned a lot of tricks as I got farther into it. I don't think it's worth adding even more churn to this PR, though.

Detailed list of submodules, which I used to track my progress.

Each of the following submodules under dist::init::apply_dist handle all configuration values:

• artifacts
  • archives (ArchiveLayer)
    • include
    • auto_includes
    • windows_archive
    • unix_archive
    • package_libraries
  • source_tarball
  • extra (deliberately not done)
  • checksum
  • tests
• builds
  • common (CommonBuildLayer; empty struct)
  • ssldotcom_windows_sign
  • macos_sign
  • cargo (BoolOr CargoBuildLayer)
  • generic (BoolOr GenericBuildLayer)
  • system_dependencies (SystemDependencies)
  • min_glibc_version
  • omnibor
  • tests
• ci
  • common (CommonCiLayer)
    • merge_tasks
    • fail_fast
    • cache_builds
    • build_local_artifacts
    • dispatch_releases
    • release_branch
    • pr_run_mode
    • tag_namespace
    • plan_jobs
    • build_local_jobs
    • build_global_jobs
    • host_jobs
    • publish_jobs
    • post_announce_jobs
  • github
    • common (CommonCiLayer)
    • runners (deliberately not done)
    • permissions (deliberately not done)
    • build_setup
  • tests
• hosts
  • common (CommonHostLayer)
  • force_latest
  • display
  • display_name
  • github (BoolOr GithubHostLayer)
  • axodotdev (BoolOr AxodotdevHostLayer)
  • tests
• installers
  • common (CommonInstallerLayer)
    • install_path
    • install_success_msg
    • install_libraries
    • bin_aliases (deliberately not done)
  • homebrew (BoolOr HomebrewInstallersLayer)
    • Bool
    • common
    • tap
    • formula
  • msi (BoolOr MsiInstallerLayer)
    • Bool
    • common
  • npm (BoolOr NpmInstallerLayer)
    • Bool
    • common
    • package
    • scope
  • powershell (BoolOr PowershellInstallerLayer)
    • Bool
    • common
  • shell (BoolOr ShellInstallerLayer)
    • Bool
    • common
  • pkg (BoolOr PkgInstallerLayer)
    • Bool
    • common
    • identifier
    • install_location
  • updater
  • always_use_latest_updater
  • tests
• publishers
  • common (CommonPublisherLayer)
    • prereleases
  • homebrew (BoolOr HomebrewPublisherLayer)
    • common
  • npm (BoolOr NpmPublisherLayer)
    • common
  • tests