[FEATURE REQ] Add API(s) to com.azure.core.util.tracing.Tracer for attributes with array values

The otel supports Span attributes with array values. For example, a string array attribute value can be added to a Span as:

```java
span.setAttribute(AttributeKey.stringArrayKey("animals "), Arrays.asList( "cat", "lion", "tiger"));
```

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Once API is in, update `ChatCompletionClientTracer` in `azure-ai-inference` to use it for the Span attributes - `gen_ai.response.finish_reasons`, `gen_ai.request.stop_sequences`.