* add missing trailing commas

* add more missing trailing commas

* add more and more missing trailing commas

- Makes build_macos.dart handle the case where there is only one Xcode
  project in the macos/ directory, but it's not called Runner.xcodeproj
- Makes getInfo throw a tool exit when trying to get project info and it
  can't find a project, since that is a configuration error by the user
  rather than a tool bug.

Avoids unnecessarily breaking projects that have another .xcodeproj in
their macos/ directory, which worked until the addition of the getInfo
call.

This reverts commit 202c1b42.

Fix some places where Debug/Release was treated as a binary switch.

Makes similar changes to Windows and Linux to simplify adding profile
support to those platforms in the future. This means `--profile` builds
will fail on Linux and Windows for now, but that's fine since they
aren't actually supported, and unlike `--release` don't provide useful
functionality at the native code level.

Also fixes 'stopApp' always using Debug on macOS, to avoid showing an
error when running Profile (or Release).

Fixes #33203

We were using the `defaults` command-line utility to parse
Plist files, but it was never supported by Apple, and it
appears that in an upcoming OS release, it will be less likely
to work:

> WARNING: The defaults command will be changed in an upcoming
> major release to only operate on preferences domains. General
> plist manipulation utilities will be folded into a different
> command-line program.

Fixes https://github.com/flutter/flutter/issues/37701

This reverts commit bd52a78c.

Slight cleanup of file locations in flutter_tools
to make it easier to see which files are responsible
for data reporting.