* One more reland of "Driver vm service (#68654)" (#69074)" (#69077)" (#69089)"

This reverts commit e5814756.

* pub run test

This reverts commit 05ab0eba.

This reverts commit 19ce7a86.

This reverts commit 3ecac303.
Co-authored-by: Dan Field <dfield@gmail.com>

Migrate flutter_driver to use package:vm_service

This adds a LICENSE file to the packages/flutter directory so that it can be found when building, and a test to make sure it exists in produced binaries.