This reverts commit 2be0d57f.

This reverts commit 9846fa51.

This adds avoid_dynamic_calls to the list of lints, and fixes all instances where it was violated.

Importantly, this lint is NOT turned on for flutter/packages/test, because those changes are happening in another PR: #84478

migrate localization to null safety

Adds tests to the following behaviors, which have existed without tests:

- When tapping during live testing, a message is printed with widgets that contain the tap location.
- When tapping during live testing, a mark is displayed on screen on the tap location.

This adds iOS key map generation that uses std::maps. It uses std::maps because on iOS if we use NSDictionaries, then when XCode loads the dylib, the initialization of those status NSDictionaries hasn't yet occurred, and it crashes the app. std::maps have a well-defined static behavior, and are correctly initialized.

I also made the naming of variables, fields, etc. consistent for macOS. We variously had macosFoo, macOSFoo, and macOsFoo. I eliminated macOsFoo and macosFoo, since the rest of the repo uses macOSFoo for lowerCamelCase names (with only a few exceptions). I used iOSFoo for iOS.

* Migrate flutter conductor out of dev/tools and into its own directory

* flesh out documentation

* fix analysis options

* fix integration test

This reverts commit e86f9c7a.

shelf 1.1.2 -> 1.1.4
flutter_template_images 1.0.2 -> 3.0.0

* Add 'v' hotkey to open DevTools in the browser