[Windows, 4.0] Improve console handling and execute/create_process.

[bruvzg]

Same as #55987 for 4.0.

With these changes, console behavior on Windows should be the same as on Linux and macOS:

• When editor is started from the console (or by another process with active console), output will be redirected to the parent console (including output from the running projects).
• When editor is started from the GUI (shortcut, Windows Explorer, etc.), no console is opened.

Changes:

• Always build with the GUI subsystem.
• Redirect stdout and stderr output to the parent process console.
• Use CreateProcessW for blocking execute calls with piped stdout and stderr (prevent console windows for popping up when used with the GUI subsystem build, and have more consistent behavior with create_process).
• Add open_console argument to the execute and create_process to open a new console window.
• Remove interface/editor/hide_console_window editor setting.
• Remove Toggle System Console menu option.
• Remove set_console_visible and is_console_visible functions.

Supersede: #53884
Fixes #31623 (showing console window is controlled by extra argument), "fixes" #26429 (cmd /c is always required for the built-in commands).

[bruvzg]

Old behavior can be easily achieved with the following methods:

Use a batch file, like this:

@echo off
godot.windows.opt.tools.64.exe
pause > nul

Or add cmd /k to the target in the shortcut:

[akien-mga]

Thanks!