Add deprecation warning for otel

Sources/ClientRuntime/Telemetry/Providers/OpenTelemetry/OTelProvider.swift

@@ -13,17 +13,20 @@ import SmithyTelemetryAPI
 @preconcurrency import protocol OpenTelemetrySdk.SpanExporter
 
 /// Namespace for the SDK Telemetry implementation.
+@available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
 public enum OpenTelemetrySwift {
     /// The SDK TelemetryProviderOTel Implementation.
     ///
     /// - contextManager: no-op
     /// - loggerProvider: provides SwiftLoggers
     /// - meterProvider: no-op
     /// - tracerProvider: provides OTelTracerProvider with InMemoryExporter
+    @available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
     public static func provider(spanExporter: any SpanExporter) -> TelemetryProvider {
         return OpenTelemetrySwiftProvider(spanExporter: spanExporter)
     }
 
+    @available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
     public final class OpenTelemetrySwiftProvider: TelemetryProvider {
         public let contextManager: TelemetryContextManager
         public let loggerProvider: LoggerProvider

Sources/ClientRuntime/Telemetry/Providers/OpenTelemetry/OTelTracing.swift

@@ -24,12 +24,17 @@
 import struct Smithy.AttributeKey
 import struct Smithy.Attributes
 
+@available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
 public typealias OpenTelemetryTracer = OpenTelemetryApi.Tracer
+@available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
 public typealias OpenTelemetrySpanKind = OpenTelemetryApi.SpanKind
+@available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
 public typealias OpenTelemetrySpan = OpenTelemetryApi.Span
+@available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
 public typealias OpenTelemetryStatus = OpenTelemetryApi.Status
 
 // Trace
+@available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
 public final class OTelTracerProvider: TracerProvider {
     private let sdkTracerProvider: TracerProviderSdk
 
@@ -46,6 +51,7 @@
     }
 }
 
+@available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
 public final class OTelTracerImpl: Tracer {
     private let otelTracer: OpenTelemetryTracer
 
@@ -74,16 +80,16 @@
 
 private final class OTelTraceSpanImpl: TraceSpan {
     let name: String
     private let otelSpan: OpenTelemetrySpan
 
     public init(name: String, otelSpan: OpenTelemetrySpan) {
         self.name = name
         self.otelSpan = otelSpan
     }
 
     func emitEvent(name: String, attributes: Attributes?) {
         if let attributes = attributes, !(attributes.size == 0) {
             self.otelSpan.addEvent(name: name, attributes: attributes.toOtelAttributes())
         } else {
             self.otelSpan.addEvent(name: name)
         }
@@ -103,7 +109,7 @@
 }
 
 extension SpanKind {
     func toOTelSpanKind() -> OpenTelemetrySpanKind {
         switch self {
         case .client:
             return .client
@@ -120,7 +126,7 @@
 }
 
 extension TraceSpanStatus {
     func toOTelStatus() -> OpenTelemetryStatus {
         switch self {
         case .error:
             return .error(description: "An error occured!") // status doesn't have error description

Sources/ClientRuntime/Telemetry/Providers/OpenTelemetry/OTelUtils.swift

@@ -15,6 +15,7 @@ import struct Smithy.AttributeKey
 import struct Smithy.Attributes
 
 extension Attributes {
+    @available(*, deprecated, message: "Moved to smithy-swift-opentelemetry package. Removal after March 10, 2026.")
     public func toOtelAttributes() -> [String: AttributeValue] {
         let keys: [String] = self.getKeys()
         var otelKeys: [String: AttributeValue] = [:]