part of https://github.com/flutter/flutter/issues/5789

* refactor the --resident run option into a separate file

* update daemon to run --resident apps

* re-plumbing daemon start

* send app logs

* update tests

* review changes

* fix test runner

* remove PackageMap.createGlobalInstance; rely on the ctor

* review comments

* fix analysis errors

* review comments; fix test

* re-add an export for debugPrint

And fix a zillion omissions this uncovered.

rename to printTrace(), printStatus(), and printError()

wrap up first daemon implementation