[tool/ci] Add iOS/macOS and Dart support to `fetch-deps` (#4562)

Adds `fetch-deps` support for:
- iOS/macOS dependencies, using `pod install`
- Dart package dependencies, using `pub get`

To make avoid doing extra work in the Dart dependencies step when using this with `*_platform_tests` CI, also adds flags for all of the other platforms, and adds a flag that allows skipping Dart dependencies for any package that doesn't have an example supporting any requested platform. This means that we can pass, e.g., `--windows --supporting-target-platforms-only` to only fetch Dart packages for packages with examples that will be build during the build-and-drive Windows tests.

Adds this as a new step in every platform tests CI task, and in the standard analyze step, so that we will pre-fetch Dart packages (and for iOS/macOS, pods). This won't yet fully eliminate later network access (see https://github.com/flutter/flutter/issues/131204), but will give us early warning on any major failures, such as pub being entirely unreachable from the bots.
- These are marked as an infrastructure step; we'll have to see if this ends up being confusing in practice. If `pub` resolution fails for legitimate reasons, such as a PR that tries to require a version of a package that doesn't exist or that has conflicts, this will cause a failure that is marked as infra. My assumption is that the much more common case is going to be that it is actually an infra failure.

Fixes https://github.com/flutter/flutter/issues/130280
15 files changed
tree: 3d0270618a14e54a48eaea2f6b7193a11d0957c6
  1. .ci/
  2. .github/
  3. packages/
  4. script/
  5. third_party/
  6. .ci.yaml
  7. .cirrus.yml
  8. .clang-format
  9. .gitattributes
  10. .gitignore
  11. .metadata
  12. analysis_options.yaml
  13. AUTHORS
  14. CODEOWNERS
  15. CONTRIBUTING.md
  16. customer_testing.bat
  17. customer_testing.sh
  18. LICENSE
  19. README.md
README.md

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animationspub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
camerapub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
cross_filepub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
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extension_google_sign_in_as_googleapis_authpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
file_selectorpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
flutter_adaptive_scaffoldpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
flutter_imagepub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
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flutter_plugin_android_lifecyclepub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
flutter_template_imagespub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
go_routerpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
go_router_builderpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
google_maps_flutterpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
google_sign_inpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
image_pickerpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
in_app_purchasepub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
ios_platform_imagespub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
local_authpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
metrics_centerpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
multicast_dnspub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
palette_generatorpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
path_providerpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
pigeonpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
pointer_interceptorpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
plugin_platform_interfacepub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
quick_actionspub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
rfwpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
shared_preferencespub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
standard_message_codecpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
url_launcherpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
video_playerpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
web_benchmarkspub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
webview_flutterpub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label
xdg_directoriespub packagepub pointspopularityGitHub issues by-labelGitHub pull requests by-label