Requesting Generation of the OpenApi (Swagger) specification from Lambda Annotations

### Describe the feature

Lambda Annotations should cause the ApiGateway to have a swagger specification complete with generated models based on the inputs / outputs of the functions.

### Use Case

My team depends heavily on OpenApi specifications. It would be extremely valuable for the generated functions to produce the specs.

### Proposed Solution

_No response_

### Other Information

_No response_

### Acknowledgements

- [ ] I may be able to implement this feature request
- [ ] This feature might incur a breaking change

### AWS .NET SDK and/or Package version used

Amazon.Lambda.Annotations

### Targeted .NET Platform

.Net 8

### Operating System and version

Lambda