Nested event structure definitions cause downstream code generation problems

[ewbankkit]

Is your feature request related to a problem? Please describe.

Rust event types for AWS Lambda are generated from this project's event definitions and the recent introduction of nested Go structure definitions in APIGatewayV2HTTPRequestContext via #274 has caused Rust code generation to fail (Rust has no nested structure definitions).

Describe the solution you'd like
Would it be possible to declare all event types as top-level structures?

Describe alternatives you've considered
In the short term a blacklist for structures that can't be handled could be introduced but the long term alternative would be significant work to rejig the Rust code generator.

[bmoffatt]

Would it be possible to declare all event types as top-level structures?

Seems fine to me