Initial Implementation of OpenTelemetry Metrics Publisher for Java AWS SDK

[evg-tso]

This PR introduces the initial implementation of an OpenTelemetry Metric Publisher for the AWS SDK for Java, allowing the seamless integration of AWS SDK metrics with OpenTelemetry’s metrics API.

Key Features:

• Metric Publisher (OtelMetricPublisher):
  • A custom metric publisher designed to capture and report AWS SDK client metrics (e.g., API call duration, retries, and HTTP metrics) to OpenTelemetry.
  • Supports asynchronous execution using customizable executors for non-blocking metric reporting.
• Supported Metrics:
  • All supported metrics are implemented according to the official AWS SDK for Java Metrics List.
  • This includes:
    • API Call Duration
    • Request Retry Count
    • HTTP Status Codes
    • Error Types
    • Additional core metrics as defined by AWS SDK Java.

Distribution:

• Publishing to GitHub Packages: Configured to publish snapshot and release versions to GitHub Packages via distributionManagement.