TypeScript fixes for S3 plugin and main module.

[Zegnat]

Thank you for this nice library! I ran into some problems using it in a TypeScript project, this PR seems to fix it, but might need some testing from others. The different fixes are split in different commits.

1. Upload is not an S3 method b741d4d

   The types were erroring because of UploadCommandOutput, as that does not exist in the SDK. It does not exist in S3 at all. Disabling it from generation for now.

2. Replace stream with Readable in method signatures 8b1cd90

   There is no primitive type called stream. It looks like the implementation (e.g. put-object.mjs) use an import from node:stream. Make sure the type does the same.

3. Do not use module augmentation in the module’s declaration 6eb9475

   Fixes errors such as “Exports and export assignments are not permitted in module augmentations.” The main declaration file for the package should not have to declare augmentations of itself. Just define the export at the root level.

   To still support access to the AwsLiteClient interface we can add it to a namespace of what we are exporting.

I could not find a good example of how you update your changelog file, as it seems to be done mostly right before a release is cut?

[richarddd]

@ryanblock can this be merged please?