EXSWHTEC-224 - Test cases ID clean up and documentation for Event Management (#71)

- Test cases ID clean up and documentation for Event Management

catch/include/hip_test_defgroups.hh

@@ -43,6 +43,13 @@ THE SOFTWARE.
  * @}
  */
 
+/**
+ * @defgroup EventTest Event Management
+ * @{
+ * This section describes tests for the event management functions of HIP runtime API.
+ * @}
+ */
+
 /**
  * @defgroup ShflTest warp shuffle function Management
  * @{