Roll meta-flutter and workspace-automation

Roll meta-flutter and workspace-automation

meta-flutter
-dart_plugin_registrant work
 * dart plugin registrant called in all cases with --obfuscate enabled
 * default --obfuscate for gen_snapshot
 * make flutter app do_compile() easier to read
 * validate pubspec name against selected
 * default strip and obfuscate to gen_snapshot step
 obfuscate appears to resolve the issue with gallery not registering plugins
 it might be that obfuscate preserves the correct entry point
 * move flutter-app.inc to the include folder

workspace-automation changes
-default 3.13.9
-pubspec-path option (enables parsing federated plugins)
-plugin-platform option (enables filtering federated plugins)
-use engine archive instead of local build

Signed-off-by: Joel Winarske <joel.winarske@gmail.com>
Change-Id: I5c869badea8658a6c1a0ee21bbded53e5886d070