feat: add FileReference model

Author: SrishJ23

src/main/java/com/crowdin/client/filereferences/model/FileReference.java

@@ -0,0 +1,11 @@
+package com.crowdin.client.filereferences.model;
+
+import lombok.Data;
+
+@Data
+public class FileReference {
+    private Long id;
+    private String name;
+    private String type;
+    private Long projectId;
+}