This fixes an infinite loop in the code that walks the parent
context chain looking for a variable.
This also includes a fix in build_info.dart whereby if the context
is set but the config is not yet set, we were trying to dereference
null.
* 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