增加Apache Pulsar MQ支持 (#3791)

* done pulsarmq

* del pulsar consumer

* pulsar partition

* done pulsar consumer&connector

* update pulsar-client version to 2.8.1

Co-authored-by: agapple <jianghang115@gmail.com>

connector/core/src/main/java/com/alibaba/otter/canal/connector/core/producer/MQMessageUtils.java

@@ -671,16 +671,33 @@ public class MQMessageUtils {
     }
 
     public static class PartitionData {
-
+        /**
+         * 当{schemaName.tableName}没有正则时，就匹配{schemaName.tableName}
+         */
         public String             simpleName;
+        /**
+         * 当{schemaName.tableName}有正则时，匹配正则
+         */
         public AviaterRegexFilter regexFilter;
+        /**
+         * hash模式
+         */
         public HashMode           hashMode = new HashMode();
     }
 
     public static class HashMode {
-
+        /**
+         * 当{schemaName.tableName}:$pk$时，使用自动主键hash
+         */
         public boolean      autoPkHash = false;
+        /**
+         * 当表达式仅为{schemaName.tableName}，没有:时，仅使用table hash
+         */
         public boolean      tableHash  = false;
+
+        /**
+         * 当表达式为{schemaName.tableName}:id^name^age时，pkNames为：id, name, age三个
+         */
         public List<String> pkNames    = new ArrayList<>();
     }