Fixes https://github.com/flutter/flutter/issues/142286

This is a refactor. No code behavior changes should be observed.

In `flutter doctor -v`, when JRE is too out-of-date to run `sdkmanager`, print a helpful error message (#138762)

Closes https://github.com/flutter/flutter/issues/138132. See this issue for more information.

New feature in upcoming Dart 3.2. See https://github.com/dart-lang/language/issues/2020. Feature is enabled by bumping the min SDK version to 3.2.

Part of https://github.com/flutter/flutter/issues/134476.

Closes https://github.com/flutter/flutter/issues/106416.

This PR adds a new `flutter config` setting named `jdk-dir`. When set, the tool will use the JDK found at this location for all Java-dependent tool operations such as building Android apps via gradle and running Android SDK tools.

Fixes #124252, finishing work on the umbrella tracking issue, #126126.

Essentially, after this PR, no (non-test) code should be be referencing/invoking the java home or binary paths.

Relands #126086, which was reverted by #126569.

Reverts flutter/flutter#126086.

This PR changed the interfaces of some classes, namely `AndroidSdk`, and deleted a global.

These classes had custom overrides in g3 that were not updated with a g3fix, so this PR has broken tests. See https://b.corp.google.com/issues/281945232 (non-public link)

This is the first step in unifying Java-finding logic across the tool. If curious, see #126029 for an example of what all the changes will probably entail.

Moves java-related functionality like `AndroidSdk.findJavaHome` to a new class, `Java`.

See tracking issue https://github.com/flutter/flutter/issues/126126 for more.

Remove 1745 decorative breaks

* tool exit on sdk manager exit and add test

* be more specific about error message

* wip

* write test

* make error handling printError

* remove diff

* [tools]some ui polish for build ipa validation

* do not print out a few success validations

* rename installed type to success for more general usage

* forgot nit after reverting custom validation types and re-use doctor types

- removes invalid arch check on Android workflow in order to enable Android development on any device supported
Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>
Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>

See https://github.com/flutter/flutter/pull/103719

* warn when doctor takes long

[flutter_tools] Add documentation to "cmdline-tools component is missing" doctor validation error (#83356)

This reverts commit 8b6baae4.

Our current top crasher is an unclear error when ProcessManager fails to resolve an executable path. To fix this, we'd like to being adjusting the process resolution logic and adding more instrumentation to track failures. In order to begin the process, the ProcessManager has been folded back into the flutter tool

* opt out the flutter tool

* oops EOF

* fix import

* Update tool_backend.dart

* Update daemon_client.dart

* fix more

Cleans up some undocumented classes and re-organizes the AndroidDevices class to avoid the need for the static testing only member. Adds a script for tracking globals.