Allows the user to specify the kind of project to create. The default is 'app'. Other choices are 'plugin' (the old '--plugin' behavior), and 'package'.

A Flutter 'package' is a Dart package that depends on Flutter, but does not contain native code.

Fixes #10377.

* Add comments to 3 methods that were missing comments.

Fix out of order (getter, private field, setter) tuple

* Code review fix.

The flakiness of commands_test is generally visible via:

```
drive:stdout:   Expected: 'log: paint'
drive:stdout:     Actual: ''
drive:stdout:      Which: is different. Both strings start the same, but the actual value is missing the following trailing characters: log: paint ...
```

By returning the name of the test we will be able to understand if
another test is running by reading the `Actual` value

This reverts commit 8d07d3f6.

This reverts commit 5f9acc41.

* fix some call sites of printError

* review comments

Bare bones widget inspector support.

Toggle the widget inspector from the flutter tool by pressing 'i'.
When the widget inspector is select mode:
Pointer down to to inspect a widget.
Pointer click to finalize selection of a widget. You can now interact
with the application as you normally would but with the inspected widget
highlighted.
Click the inspect icon in bottom left corner of screen to reactivate
select mode.

Addresses
https://github.com/flutter/flutter/pull/11705/files/3b4687bf69e41bd74db230452b36c0898d01dfa5#r134325222

- Wait for full Hot Reload
- Wait for full Restart
- Fallback if checkHealth throws METHOD_NOT_FOUND.
  We try to wait for the service extensions to be registered and retry.

when describing non-nullable method arguments.

Some widgets are using closures even if the only values that are
captured are this, context or widget, that can be accessed even from
methods of the State object.

This reverts commit 1705bf3c.

* Revert "Fix a typo in the saved certificate error message (#11640)"

This reverts commit bfda885a.

* Revert "Rollback patch that broke microbenchmarks (#11616)"

This reverts commit 70fe6f4c.

* Revert "Extract snapshotting logic to Snapshotter class (#11591)"

This reverts commit 309a2d78.

* Revert "Minor whitespace formatting fix (#11590)"

This reverts commit bf69c3c6.

* Revert "Avoid rebuilding snapshots if no change to source (#11551)"

This reverts commit 74835db5.

* Let android create template have an explicit flutter splash screen flag

* minor language tweak

* Revert "Create template splash screens for Android and iOS (#11505)"

This reverts commit 1ad4a088.

* Revert "Roll engine (#11619)"

This reverts commit ea78f448.

* Add iOS template

* Android

* Let the engine reset the theme without the activity knowing

* Small tweak

* Replace assets with different vectors

* Let the template hookup have no actual image assets

* Add back placeholder assets with 1px transparent pngs

* Fix drawable xml

* clean up an extraneous line in the storyboard xml

* roll

* kick the tests again

* Revert "kick the tests again"

This reverts commit 4480a02ce2d60e66ad0ca8ac5a2029f84f9b71d9.

* Let the initial date picker mode be selectable

* Doc for enum

* Add a test

* Add a comment for test

* actually decouple test from setup state

* Wrap the label widget of the Chip in a Flexible. (#11523)

* This allows the Chip to constrain the size of its content after taking into account the space occupied by the avatar and delete icon (if they are present)

* Adding unit tests to evaluate correct size constraints of the Chip widget's label. (#11523)

* Minor change in formatting.

* Adjust function formatting.

First step in eliminating code duplication between script snapshotting
(in FLX build) and AOT, assembly AOT snapshotting.