Support X-Ray locally

According to the README:
> The component does _not_ support X-ray and other Lambda integrations locally.

So...how hard would it be to add this support for local X-Ray integration?

I think the primary use case for this would be to allow functions built with the SAM CLI that utilize X-Ray (e.g., with `AWSXRay.captureAWSv3Client`) to run locally. Not having this integration requires annoying hacks to import or not import the X-Ray SDK based on where the function is deployed. For more info, and to add some support to my request, please have a look at [this issue](https://github.com/aws/aws-sam-cli/issues/217) in the SAM CLI repo, where people have been ranting about this feature since 2017. 😅

先從 README 中關於本機 X-Ray 整合和其他 Lambda 整合不受支援的說明開始，然後閱讀連結的 SAM CLI issue #217，以了解先前的背景和要求的行為。定義本機 X-Ray 整合的範圍，並使用採用 AWSXRay.captureAWSv3Client 的 SAM CLI 函式進行驗證；完成的標準是該函式不需條件式匯入 X-Ray SDK 即可在本機執行。

由索引模型根據 Issue 內容生成。