This simple first step cmdline utility launches and manages an external analysis server process.
Future CLs will add dartfix specific functionality.
Change-Id: Iba32177acd8ca1edd703bad78e55cd1e88edb6bd
Reviewed-on: https://dart-review.googlesource.com/76320
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Dan Rubel <danrubel@google.com>