Added new Error code UNKNOWN_TOPIC_ID (#4525)

Author: pranavrth

src/rdkafka.c

@@ -700,6 +700,7 @@ static const struct rd_kafka_err_desc rd_kafka_err_descs[] = {
     _ERR_DESC(RD_KAFKA_RESP_ERR_PRINCIPAL_DESERIALIZATION_FAILURE,
               "Broker: Request principal deserialization failed during "
               "forwarding"),
+    _ERR_DESC(RD_KAFKA_RESP_ERR_UNKNOWN_TOPIC_ID, "Broker: Unknown topic id"),
     _ERR_DESC(RD_KAFKA_RESP_ERR_FENCED_MEMBER_EPOCH,
               "Broker: The member epoch is fenced by the group coordinator"),
     _ERR_DESC(RD_KAFKA_RESP_ERR_STALE_MEMBER_EPOCH,

src/rdkafka.h

@@ -631,6 +631,8 @@ typedef enum {
         RD_KAFKA_RESP_ERR_FEATURE_UPDATE_FAILED = 96,
         /** Request principal deserialization failed during forwarding */
         RD_KAFKA_RESP_ERR_PRINCIPAL_DESERIALIZATION_FAILURE = 97,
+        /** Unknown Topic Id */
+        RD_KAFKA_RESP_ERR_UNKNOWN_TOPIC_ID = 100,
         /** The member epoch is fenced by the group coordinator */
         RD_KAFKA_RESP_ERR_FENCED_MEMBER_EPOCH = 110,
         /** The member epoch is stale */