#461 - ENH: Add @Draftable support - phase 1

src/main/java/com/avaje/ebeaninternal/server/deploy/DbReadContext.java

@@ -79,4 +79,9 @@ public interface DbReadContext {
    * Return the query mode.
    */
   SpiQuery.Mode getQueryMode();
+
+  /**
+   * Return true if the underlying query is a 'asDraft' query.
+   */
+  boolean isDraftQuery();
 }