add post slug to v2 parameters

Author: ianardee

src/main/java/com/mindee/InferenceParameters.java

@@ -51,7 +51,7 @@ private InferenceParameters(
       String textContext,
       String dataSchema
   ) {
-    super(modelId, alias, webhookIds, pollingOptions);
+    super(modelId, alias, webhookIds, pollingOptions, "extraction");
     this.rag = rag;
     this.rawText = rawText;
     this.polygon = polygon;

src/main/java/com/mindee/v2/clientOptions/BaseParameters.java

@@ -23,6 +23,10 @@ public abstract class BaseParameters {
    * Polling options. Set only if having timeout issues.
    */
   protected final AsyncPollingOptions pollingOptions;
+  /**
+   * Slug of the product type.
+   */
+  private final String slug;
 
   public MultipartEntityBuilder buildHttpBody(MultipartEntityBuilder builder) {
     builder.addTextBody("model_id", this.getModelId());