[DurableExecution]: put SDK identifier in UserAgent

[zhongkechen]

Describe the feature

We would like to be able to identify the requests from this dotnet SDK. Please put a identifier string like below in UserAgent:

aws-durable-execution-sdk-dotnet/0.0.1

Example in Java SDK:

https://github.com/aws/aws-durable-execution-sdk-java/blob/b0d0fd75c7cc42611a580bdf7414e405e07fd014/sdk/src/main/java/software/amazon/lambda/durable/DurableConfig.java#L79

Use Case

We would be able to track the usage of the SDK at runtime.

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

Any

Targeted .NET Platform

Any

Operating System and version

Any

[GarrettBeatty]

0.1.1-preview should be fixed in this version