Add Open In External Editor to the file system dock menu

[no-arr]

Implements an "Open In External Editor" option/menu button to the file system dock menu which opens by right clicking any file/directory. Below is the demonstration of how the option works. The option is not visible to the users who have text_editor/external/use_external_editor disabled.

Under the hood: it makes use of OS.execute where the program path is the user defined code editor path and in the arguments it passes the current selected directory's path globalized.

godot.windows.editor.x86_64_zPI9N3NnXW.mp4

This improves the developer workflow by reducing the need to open a terminal just to launch the external editor from a project folder.

[KoBeWi]

How is it different from "Open in External Program"?

[no-arr]

How is it different from "Open in External Program"?

Open In External Program does not work with directories. It may feel unintuitive to see that option when right-clicking a directory, since directories aren't typically opened by the OS with an "external program" the same way files are.

[KoBeWi]

Wouldn't it be better then to make Open in External Program support directories, instead of adding another option?

[no-arr]

Wouldn't it be better then to make Open in External Program support directories, instead of adding another option?

Yes, though that might be confusing for users, since there's already a dedicated "Open in File Manager" option for opening directories in the system file explorer or for those users who have external code editor option disabled.

[KoBeWi]

Then you could make it only appear if there is an external editor configured.
Or if has to be a new option, the name could be more explicit, like Open in External Text Editor or something.