[HUDI-2394] Implement Kafka Sink Protocol for Hudi for Ingesting Immutable Data (#3592)

- Fixing packaging, naming of classes
 - Use of log4j over slf4j for uniformity
- More follow-on fixes
 - Added a version to control/coordinator events.
 - Eliminated the config added to write config
 - Fixed fetching of checkpoints based on table type
 - Clean up of naming, code placement

Co-authored-by: Rajesh Mahindra <rmahindra@Rajeshs-MacBook-Pro.local>
Co-authored-by: Vinoth Chandar <vinoth@apache.org>

hudi-kafka-connect/configs/config-sink.json

@@ -0,0 +1,19 @@
+{
+    "name": "hudi-sink",
+    "config": {
+		"bootstrap.servers": "localhost:9092",
+		"connector.class": "org.apache.hudi.connect.HoodieSinkConnector",
+		"tasks.max": "4",
+		"key.converter": "org.apache.kafka.connect.storage.StringConverter",
+		"value.converter": "org.apache.kafka.connect.storage.StringConverter",
+		"value.converter.schemas.enable": "false",
+		"topics": "hudi-test-topic",
+		"hoodie.table.name": "hudi-test-topic",
+		"hoodie.base.path": "file:///tmp/hoodie/sample-table",
+		"hoodie.datasource.write.recordkey.field": "volume",
+		"hoodie.datasource.write.partitionpath.field": "year",
+		"hoodie.schemaprovider.class": "org.apache.hudi.schema.FilebasedSchemaProvider",
+		"hoodie.deltastreamer.schemaprovider.source.schema.file": "file:///tmp/hoodie/schema.avsc",
+		"hoodie.deltastreamer.schemaprovider.target.schema.file": "file:///tmp/hoodie/schema.avsc"
+    }
+}