Use Godot primitives for logging, change default log level

[Ughuuu]

For now this logs debugging in editor and warning in export. Also wasnt sure what to call to log in godot 3.5, so it only has 4.0.

[Faless]

Also wasnt sure what to call to log in godot 3.5, so it only has 4.0.

Thank you for your contribution, I've made the changes for 3.5, and switched to print_verbose in 4.x.

Sadly, the server hosting our linux toolchains is offline, so the linux builds are failing.

I'll see if we can setup github mirrors of the toolchains or in any case fix the CI as soon as possible.

[Faless]

Thank you for your contribution 🚀 !