Revert #41164, add subsystem build option.

[bruvzg]

• Revert [Windows] Attach to parent console instead of creating new one. #41164 (console output redirection), seems like it's causing more issues.
• Add windows_subsystem build option (defaults to "gui", always set to "console" when tests are enabled.

Fixes: #41328 and fixes #41307

Bugsquad edit: Also fixes godotengine/godot-proposals#1341.

[Xrayez]

I confirm this fixes #41307. 🙂

[akien-mga]

That's too bad, this was a great way to handle console output in a Unix-like way. Does this bring us back to not having any output when starting Godot template builds from a terminal on Windows? That's a big issue for debugging.

[bruvzg]

Does this bring us back to not having any output when starting Godot template builds from a terminal on Windows?

Yes.

That's a big issue for debugging.

It's not, manual redirection still works with GUI app, (e.g godot.exe | more).

[akien-mga]

That's a big issue for debugging.

It's not, manual redirection still works with GUI app, (e.g godot.exe | more).

Well let's say it's a big issue for the majority of users who don't know they'll get different output when redirecting than they're getting on stdout ;) I didn't knowing directing to more would make a difference.

[pouleyKetchoupp]

I can confirm reverting #41164 fixes #41328.

@akien-mga This PR needs to be merged soon while waiting for a better solution, because #41328 makes the editor almost unusable on Windows 10 and there's no workaround that I know of.

Edit: It's actually possible to work around this issue with Editor > Toggle System Console so it's not as critical as I thought.

[akien-mga]

Thanks! But sad, I liked this solution 😿