Add ThreadStorage utility class and support for Lambda TraceId propagation

[RanVaknin]

This PR adds:

1. New thread-context code package that provides thread-local storage utilities for sharing data across components, specifically to support trace ID propagation, and
2. Support for trace id propagation using the new threadStorage class

Background

Previously, we implemented trace ID propagation using SLF4J's MDC in PR #6363, but this was
reverted because the MDC interface exists but the implementation is not provided by the SDK, Lambda runtime, or X-Ray SDK.

Solution

Added a small ThreadStorage utility class that provides thread local key value storage using ThreadLocal<Map<String, String>>. For this case, it allows the Lambda Runtime Interface Client, AWS SDK, and X-Ray SDK to share trace context via this one package, but can extended to other use cases.

Example:

ThreadStorage.put("some-value", foo);
String traceId = ThreadStorage.get("some-value");
ThreadStorage.remove("some-value");
ThreadStorage.clear();

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)

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[github-actions]

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