feat: Supports upload files to AWS S3.

[xwxtwd]

Relates to:

N/A (Internal feature implementation)

Risks

Low - This is an isolated service addition to plugin-node for S3 file upload functionality. Main risks:

1. AWS credentials security
2. File upload limits and validation
3. S3 bucket permissions configuration

Background

What does this PR do?

Adds a new service to plugin-node that enables file uploads to AWS S3 storage. This includes:

New S3 service implementation
File upload handling
AWS SDK integration
Configuration for S3 bucket and credentials

What kind of change is this?

Features (non-breaking change which adds functionality)

Why are we doing this? Any context or related work?

After AI-generated NFT, need to upload the file to a network storage service.

Documentation changes needed?

My changes do not require a change to the project documentation.

Testing

Where should a reviewer start?

1. Review the S3 service implementation
2. Check AWS configuration setup
3. Verify file upload functionality
4. Review error handling and validation

Detailed testing steps

1. Configure AWS credentials in environment variables. (.env)

• AWS_ACCESS_KEY_ID
• AWS_SECRET_ACCESS_KEY
• AWS_REGION
• AWS_S3_BUCKET
• AWS_S3_UPLOAD_PATH

2. Start the plugin-node service

const aws: AwsS3Service = runtime.getService(ServiceType.AWS_S3);
const res = await aws.uploadFile('your file path')
elizaLogger.log(res.url)

4. Verify successful upload to S3 bucket
5. Check proper error handling and responses