Add CLAUDE_4_5_HAIKU model (#675)

Author: rpanackal

docs/release_notes.md

@@ -12,7 +12,7 @@
 
 ### ✨ New Functionality
 
-- [Orchestration] Added new models for `OrchestrationAiModel`: `SONAR`,`SONAR_PRO`, `GEMINI_2_5_FLASH_LITE`.
+- [Orchestration] Added new models for `OrchestrationAiModel`: `SONAR`,`SONAR_PRO`, `GEMINI_2_5_FLASH_LITE`, `CLAUDE_4_5_HAIKU`.
 - [Orchestration] Convenience for adding the `metadata_params` option to grounding calls.
 
 ### 📈 Improvements

orchestration/src/main/java/com/sap/ai/sdk/orchestration/OrchestrationAiModel.java

@@ -144,6 +144,10 @@ public class OrchestrationAiModel {
   public static final OrchestrationAiModel CLAUDE_4_5_SONNET =
       new OrchestrationAiModel("anthropic--claude-4.5-sonnet");
 
+  /** Anthropic Claude 4.5 Haiku model */
+  public static final OrchestrationAiModel CLAUDE_4_5_HAIKU =
+      new OrchestrationAiModel("anthropic--claude-4.5-haiku");
+
   /**
    * Amazon Titan Text Lite model
    *