Support a configuration attribute 'program' for 'flutter.attach'

[pchampio]

With the flutter CLI we can run:

$ flutter attach --device-id=flutter-tester --debug-uri=http://[....] --target=lib/main_desktop.dart 

The target flag is used to select The main entry-point file of the application, as run on the device, if omitted, it default to "lib/main.dart").

Currently the extension doesn't support custom entry-point, ref, "lib/main.dart" is always used.

[pchampio]

Awesome! Thanks.

[DanTup]

I'm planning to make a beta build today that will include this if you want to test it, just gotta sort a few things out first.

[DanTup]

There's a beta build here:

https://github.com/Dart-Code/Dart-Code/releases/tag/v3.3.0-beta.2

Release notes aren't done yet (but hopefully will be done today). Please let me know if you try it out if you have any issues.

[pchampio]

After testing I didn't found any issues!

[DanTup]

Great, thanks for confirming! 👍