To support #61407 , the tool needs to check if a single widget reload is feasible, and then conditionally perform a fast reassemble.

To accomplish this, the FlutterDevice class will have a WidgetCache injected. This will eventually contain the logic for parsing the invalidated dart script. Concurrent with the devFS update, the widget cache will be updated/checked if a single widget reload is feasible. If so, an expression evaluation with the target type is performed and the success is communicated through the devFS result. An integration test which demonstrates that this works is already present in https://github.com/flutter/flutter/blob/master/packages/flutter_tools/test/integration.shard/hot_reload_test.dart#L86

Finally, when actually performing the reassemble the tool simply checks if this flag has been set and calls the alternative reassemble method.

Cleanups:

Remove modules, as this is unused now.

This reverts commit fc09119d.

* add benchmarkLive flag and tests

* update handlePointerEventRecord doc

* using e2e 0.6.1

After #31935, Some one sequence gesture recognizers requires at least one callback to be able to compete in the arena. This PR adds the a no-op callback in the gesture recognizer in the platform view when the gesture recognizer does not have any callbacks. This way, all the gesture recognizers in the platform view can compete in the arena.

* cleanup macrobenchmark duplicate files

https://github.com/flutter/flutter/issues/61736

* Make scrollbar thickness and radius customizable

https://github.com/flutter/flutter/issues/29576
https://github.com/flutter/flutter/issues/36412

* Add docs for constants

* No more magic numbers in test

SceneBuilder.addPicture() is implemented in C++, and if `picture`
is null, it will seg-fault. This catches the problem before that
happens.

This updates the default value of the `invertMeaningOfVerticalAndHorizontal`
argument from true to false.

https://github.com/flutter/flutter/issues/61470

https://github.com/flutter/flutter/issues/60559

This reverts commit b7b60a2d.

Revert "Reland "Add support for Dart Development Service (DDS) in Flutter Tools (#61276)" (#61633)" (#61641)

This reverts commit 594c3541.

This reverts commit a1a5a8f6.