* Revert "Revert "Add android license verification to doctor and some refactoring" (#14727)"
This reverts commit d260294752.
* Add tests, fix sdkManagerEnv and use it consistently, and rearrange Status object model
* AnsiSpinner needs to leave the cursor where it found it.
* fix tests
* Const constructor warning only shows up on windows...?
* Avoid crash if we can't find the home directory
* Make pathVarSeparator return a string in the mock
* Implement review comments
* Fix out-of-order problem on stop
Reports from that commit included:
* Doctor hanging
* Doctor prompting to install JDK
* AnsiStatus.cancel() printing elapsed time and extra newline
* Printing extra spinner character at the end of each line
* Initial version, seems to work
* Unit test for android license checker
* Cleanups
* Windows analyzer wants const.
* Refinements to timeout
* review comments
* Forgot a nit
We thought it would be OK to call the create command offline-only, but it turns out that isn't a great idea because not all of the create template dependencies are cached by running flutter_tool.
This PR makes it go online by default when running pub get after creating a project, and adds an "--offline" flag to the create command so that offline users can use it offline if their cache is warm.
In order to allow offline usage of the create command we need to be able to tell pub not to try and contact the server to see if new versions are available. Since all the versions that create could want are pinned, it shouldn't need to check for new versions.
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.
