Add command-line interface

[bruce965]

Hi 🙋‍♂️

This change allows codegen from the command-line with this command:

godot path/to/project.godot --headless --script res://addons/SpacetimeDB/cli.gd

The output looks something like the following:

Godot Engine v4.6.1.stable.official.14d19694e - https://godotengine.org

(... SNIP ...)

Generated files:
res://spacetime_bindings/schema/types/spacetime_person.gd
res://spacetime_bindings/schema/tables/spacetime_person_table.gd
res://spacetime_bindings/schema/module_spacetime_client.gd
res://spacetime_bindings/schema/module_spacetime_db.gd
res://spacetime_bindings/schema/module_spacetime_reducers.gd
res://spacetime_bindings/schema/module_spacetime_types.gd
res://spacetime_bindings/schema/spacetime_autoload.gd
OK!
(... SNIP ...)

Feel free to merge if you think this could be useful. Also, I noticed you are currently refactoring, let me know if you need me to have a look again once that's done.

Thank you and wish you a good day!

[bruce965]

This was necessary to prevent the process from hanging. I assume that's because when running from the command-line it runs in single-thread mode.

[xDovos]

i'm almost raedy to release the V2 version of the plugin. after that i will look if this is still compatible.

[xDovos]

i merged my v2 changes into main, so this has now merge conflicts. can you update the PR and check that it still works as expected?

[bruce965]

@xDovos it seems to still be working.

I removed my logging adapter since you already made it flexible enough with your refactoring, but I still had to add a boolean flag to force directing logs to the CLI.