More details in error messages

[HHogg]

👋 I've annotated a lot of things with #[typeshare]. However when running the generator I get errors, like...

thread '<unnamed>' panicked at 'failed to parse a rust type: ["usize"]'
thread '<unnamed>' panicked at 'failed to parse a rust type: ["usize"]'
thread '<unnamed>' panicked at 'serde tag attribute needs to be specified for algebraic enum Transform.

The last error is really great as it lets me know where it is the enum Transform. The previous 2 would be really useful to have the name of the thing that is using usize.

[CerulanLumina]

Hello, and thanks for submitting an issue! We will take a look at this soon!