Amazon.Lambda.Annotations - Support suppressing serverless.template file creation

### Describe the feature

The ability to suppress the generation of the "serverless.template" file via a configuration when using `Amazon.Lambda.Annotations`.

### Use Case

Our team's chosen IAC of choice isn't serverless (it's terraform) so we would like the ability to suppress the generation of the "serverless.template" file.

Ideally we have a choice to chose which IAC to generate but suppressing the file will be good enough for now.

### Proposed Solution

_No response_

### Other Information

_No response_

### Acknowledgements

- [x] 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 1.6.1

### Targeted .NET Platform

.NET 8

### Operating System and version

Windows, Mac