Initial UploadModel integration

Signed-off-by: Owais Kazi <[email protected]>

src/main/java/org/opensearch/flowframework/workflow/UploadModel/UploadModelStep.java

@@ -0,0 +1,22 @@
+package org.opensearch.flowframework.workflow.UploadModel;
+
+import org.opensearch.flowframework.workflow.WorkflowData;
+import org.opensearch.flowframework.workflow.WorkflowStep;
+
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+
+public class UploadModelStep implements WorkflowStep {
+
+    private final String NAME = "upload_model_step";
+
+    @Override
+    public CompletableFuture<WorkflowData> execute(List<WorkflowData> data) {
+        return null;
+    }
+
+    @Override
+    public String getName() {
+        return NAME;
+    }
+}