misc: add function to emit business metrics with attributes as receiver

Author: 0marperez

runtime/runtime-core/api/runtime-core.api

@@ -83,6 +83,7 @@ public abstract interface class aws/smithy/kotlin/runtime/businessmetrics/Busine
 
 public final class aws/smithy/kotlin/runtime/businessmetrics/BusinessMetricsUtilsKt {
 	public static final fun containsBusinessMetric (Laws/smithy/kotlin/runtime/operation/ExecutionContext;Laws/smithy/kotlin/runtime/businessmetrics/BusinessMetric;)Z
+	public static final fun emitBusinessMetric (Laws/smithy/kotlin/runtime/collections/Attributes;Laws/smithy/kotlin/runtime/businessmetrics/BusinessMetric;)V
 	public static final fun emitBusinessMetric (Laws/smithy/kotlin/runtime/operation/ExecutionContext;Laws/smithy/kotlin/runtime/businessmetrics/BusinessMetric;)V
 	public static final fun getAccountIdBasedEndpointAccountId ()Laws/smithy/kotlin/runtime/collections/AttributeKey;
 	public static final fun getBusinessMetrics ()Laws/smithy/kotlin/runtime/collections/AttributeKey;

runtime/runtime-core/common/src/aws/smithy/kotlin/runtime/businessmetrics/BusinessMetricsUtils.kt

@@ -77,3 +77,10 @@ public enum class SmithyBusinessMetric(public override val identifier: String) :
     ACCOUNT_ID_BASED_ENDPOINT("O"),
     SIGV4A_SIGNING("S"),
 }
+
+/**
+ * Emits a business metric if the current [Attributes] instance is of type [ExecutionContext].
+ */
+public fun Attributes.emitBusinessMetric(metric: BusinessMetric) {
+    if (this is ExecutionContext) this.emitBusinessMetric(metric)
+}