Add SRV6 APP tables (#538)

*New APP_DB table for SRV6 SID LIST
*New APP_DB table for SRV6 MY_SID

Author: Kumaresh Perumal

common/schema.h

@@ -108,6 +108,9 @@ namespace swss {
 
 #define APP_NEIGH_RESOLVE_TABLE_NAME        "NEIGH_RESOLVE_TABLE"
 
+#define APP_SRV6_SID_LIST_TABLE_NAME        "SRV6_SID_LIST_TABLE"
+#define APP_SRV6_MY_SID_TABLE_NAME          "SRV6_MY_SID_TABLE"
+
 /***** TO BE REMOVED *****/
 
 #define APP_TC_TO_QUEUE_MAP_TABLE_NAME  "TC_TO_QUEUE_MAP_TABLE"