Add the ios-reviewers review team (#166034)

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [ ] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [ ] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

---------

Co-authored-by: Jenn Magder <magder@google.com>

CODEOWNERS

@@ -21,3 +21,12 @@
 # scrutinized as mistakes are irreversible.
 /engine/src/flutter/shell/platform/embedder/embedder.h @cbracken @chinmaygarde @loic-sharma
 /engine/src/flutter/shell/platform/embedder/tests/embedder_frozen.h @cbracken @chinmaygarde @loic-sharma
+
+# iOS team - keep this synced with .github/labeler.yml's team-ios section.
+/engine/src/flutter/shell/platform/darwin/common/ @ios-reviewers
+/engine/src/flutter/shell/platform/darwin/ios/framework/ @ios-reviewers
+/packages/flutter_tools/**/ios/* @ios-reviewers
+/packages/flutter_tools/**/macos/* @ios-reviewers
+/packages/flutter_tools/**/*xcode* @ios-reviewers
+/packages/flutter_tools/**/*ios* @ios-reviewers
+/packages/flutter_tools/**/*macos* @ios-reviewers