A simple Toml IO GDExtension with Rust. (Just a temporary solution)
Just create a file like this with an extension .gdextension in your project.
[configuration]
entry_symbol = "toml_rs_ext_init"
compatibility_minimum = 4.1
reloadable = true
[libraries]
<OS>.debug.<platform> = "res://path/to/debug/binary"
<OS>.release.<platform> = "res://path/to/release/binary"